Your FREE GRE Psychology Subject Test Practice Test 2026 – 310+ Q&A

Correct answer: Serotonin

Serotonin is the transmitter tied most directly to the joint regulation of mood, appetite, and sleep, which is why depleted serotonergic activity is the classic correlate of depression. Histamine drives cortical arousal and wakefulness and does not set appetite or mood. Glutamate is the fast excitatory workhorse of the cortex and carries no such regulatory brief. Adenosine accumulates as sleep pressure across the waking day but leaves mood and appetite untouched.

Correct answer: Sympathetic nervous system

The sympathetic nervous system is the autonomic branch that mobilises the body for fight or flight, raising heart rate, dilating the pupils and driving adrenal output. The parasympathetic nervous system does the opposite, restoring rest-and-digest functions after the threat passes. The enteric nervous system governs gut motility largely on its own. The somatic nervous system carries voluntary skeletal motor commands and is not part of the autonomic division at all.

Correct answer: The interval after an action potential when the neuron stays unexcitable.

The interval after an action potential when the neuron stays unexcitable is exactly what the refractory period names: sodium channels sit inactivated and a second spike cannot be triggered until the membrane resets. Recuperation with discharge at heightened rates describes the supernormal period that follows recovery, not the block itself. Vesicle reloading in the nerve terminal is presynaptic resupply and says nothing about membrane excitability. Transmitter crossing the synaptic cleft is ordinary signalling, which occurs during firing rather than in place of it.

Correct answer: Brainstem

The brainstem houses the medullary and pontine centers that set heart rate, respiratory rhythm, and blood pressure, so damage there is rapidly fatal. The forebrain handles cognition, emotion, and endocrine drive but does not generate the respiratory or cardiac rhythm. The neocortex supports perception, planning, and language, none of which are life-sustaining reflexes. The claustrum is a thin sheet implicated in coordinating cortical activity, with no autonomic pacemaking role.

Correct answer: Cortisol

Cortisol is the glucocorticoid released by the adrenal cortex at the end of the hypothalamic-pituitary-adrenal axis, and it is the hormone primarily responsible for sustaining the body's response to stress. Vasopressin is co-released with CRH during stress and boosts ACTH release, but it acts as an upstream helper whose main job is water retention. Oxytocin rises under stress and is linked to tend-and-befriend affiliation, not to the core glucocorticoid response. Prolactin also climbs during stress, yet its primary role is milk production.

Correct answer: Night vision

Night vision is the rods' specialty: they carry a high convergence ratio and a pigment that responds to very few photons, so they dominate under dim illumination. Color vision depends on the three cone classes, which rods cannot supply because a single rod pigment cannot code wavelength. Focal vision belongs to the cone-packed fovea, where rods are effectively absent. Depth vision is computed later from binocular disparity and pictorial cues rather than by any one receptor class.

Correct answer: To shield and insulate the neuron's axon.

Myelin exists to shield and insulate the neuron's axon, which lets impulses jump between nodes of Ranvier and speeds conduction. Buffering and clearing potassium is done by astrocytes, not by the myelin sheath. Engulfing and clearing debris is the job of microglia. Taking up and recycling spent transmitter happens at the synapse through transporters and astrocytes, which myelin does not do.

Correct answer: Cerebellum

The cerebellum compares intended with actual movement and issues the corrections that make voluntary action smooth and balance stable, so cerebellar lesions produce ataxia and intention tremor. The basal ganglia select and initiate movements, and their damage produces the tremor and slowness of Parkinson's disease rather than incoordination. The motor cortex issues the voluntary commands themselves but does not coordinate their timing. The vestibular nuclei relay balance signals but do not coordinate voluntary limb movement.

Correct answer: It mimics the action of a neurotransmitter.

An agonist binds the receptor and activates it, so it mimics the action of a neurotransmitter and produces the same downstream response. It prevents the effect of a neuromodulator describes an antagonist, which occupies the receptor and blocks the response instead of triggering it. Quickening the breakdown of a transmitter is enzymatic degradation, which lowers signalling rather than reproducing it. Directing the synthesis of a neuropeptide is a precursor or regulatory effect upstream of release, not receptor activation.

Correct answer: Occipital lobe

The occipital lobe is primarily responsible for processing visual information, because primary visual cortex receives input from the lateral geniculate nucleus there. The temporal lobe handles hearing and, through the ventral stream, object recognition after occipital analysis. The parietal lobe handles touch and spatial location, the dorsal where stream. The fusiform gyrus supports face and object recognition but is a gyrus on the temporal and occipital underside, not the lobe that processes visual information first.

Correct answer: Reward and pleasure

Dopamine carries the reward and pleasure signal along the mesolimbic pathway, where phasic bursts mark outcomes better than expected and reinforce the behavior that produced them. Memory and learning rest chiefly on glutamatergic plasticity in the hippocampus. Anxiety and arousal track noradrenergic and serotonergic tone rather than dopaminergic tone. Thirst and appetite are set by hypothalamic osmotic and hormonal signals, not by the reward pathway.

Correct answer: Language and analytical thinking

In most right-handed people the left hemisphere is dominant for language and analytical thinking, housing Broca's and Wernicke's areas and the sequential, rule-governed operations that support them. Spatial and emotional processing lean on the right hemisphere, which is why right-sided lesions produce neglect and flattened prosody. Rhythmic and intuitive reasoning is likewise a right-hemisphere bias rather than a left one. Musical and artistic performance draws on right-hemisphere pattern and contour processing in untrained listeners.

Correct answer: Hippocampus

The hippocampus consolidates new declarative memories, which is why bilateral damage, as in patient H.M., blocks new learning while sparing old memories. The amygdala adds emotional weight to memories but does not form them. The mammillary bodies are damaged in Korsakoff syndrome and relay hippocampal output, but they are not the primary site. The prefrontal cortex supports working memory and retrieval strategy rather than forming lasting memories.

Correct answer: Sensory perception and integration

The parietal lobe takes touch, proprioception, and position signals and welds them into a single spatial frame, so sensory perception and integration is its defining job and its damage yields neglect and astereognosis. Emotional appraisal and attachment belong to limbic and orbitofrontal circuits. Movement sequencing and inhibition are frontal and basal-ganglia functions lying anterior to the central sulcus. Auditory streaming and recognition are carried out in the superior temporal plane, not the parietal cortex.

Correct answer: Melatonin

Melatonin is the pineal secretion that rises in darkness and falls with light, entraining the circadian sleep-wake cycle. Hypocretin, also called orexin, comes from the lateral hypothalamus and stabilises wakefulness, and its loss causes narcolepsy. Cortisol is an adrenal hormone that peaks after waking but is not made by the pineal gland. Adenosine builds up in the brain during waking to create sleep pressure, but it is a neuromodulator rather than a pineal hormone.

Correct answer: Major excitatory neurotransmitter

Glutamate is the major excitatory neurotransmitter of the central nervous system, depolarising targets through AMPA and NMDA receptors and underwriting long-term potentiation. The chief inhibitory neurotransmitter is GABA, glutamate's decarboxylated product and functional opposite. A main peptidergic neurotransmitter would be a neuropeptide such as substance P, released in far smaller quantities and on a slower timescale. A slow cholinergic neurotransmitter describes acetylcholine acting at muscarinic receptors, a modulatory rather than a fast excitatory role.

Correct answer: Hippocampus

Place cells sit in the hippocampus, and it is hippocampal output that consolidates the cognitive map used for spatial memory and navigation, which is why hippocampal volume tracks navigational expertise. The neostriatum supports stimulus-response route learning, a strategy that survives hippocampal damage. The paleocortex handles olfaction and contributes odor identity, not spatial layout. The subthalamus sits in the motor loop of the basal ganglia and stores no map.

Correct answer: The brain's power to build new neural links across life.

Neuroplasticity is the brain's power to build new neural links across life, reorganizing connections after learning or injury. The birth of new neurons from stem cells is neurogenesis, which is limited to a few regions and is not the definition of plasticity. A lasting boost of one synapse after repeated firing is long-term potentiation, one mechanism of plasticity rather than the general capacity. A brief early window is a critical period, which contradicts plasticity continuing across life.

Correct answer: Hypothalamus

The hypothalamus monitors body temperature, fluid balance and nutrient signals and drives the autonomic and endocrine responses that maintain homeostasis, including hunger and thermoregulation. The pituitary gland releases hormones on hypothalamic command rather than sensing and regulating these states itself. The medulla oblongata controls breathing and heart rate, not temperature or hunger. The thalamus relays sensory information to the cortex.

Correct answer: Noradrenaline

Noradrenaline, also written norepinephrine, is released by sympathetic postganglionic fibres onto the heart, vessels, and glands and is the transmitter that carries the sympathetic signal to its targets. Acetylcholine is the tempting near-miss because it does the preganglionic step and the parasympathetic postganglionic step, but not the sympathetic postganglionic one. Phenylalanine is a dietary amino acid at the head of the catecholamine synthesis chain, not a transmitter. Neuropeptides such as neuropeptide Y are co-released in small amounts and modulate rather than carry the signal.

Correct answer: Basal ganglia

The basal ganglia gate and scale movements already selected by cortex, and their failure produces the poverty of movement in Parkinson's disease and the excess of movement in Huntington's, which is why they are credited with smooth execution. The limbic system handles emotion and motivation, and its lesions leave gait intact. The premotor area selects and prepares an action rather than regulating its running amplitude. The dentate gyrus is hippocampal tissue serving memory encoding.

Correct answer: Temporal lobe

The primary auditory cortex sits in Heschl's gyrus on the superior surface of the temporal lobe, where thalamic auditory input first reaches cortex. The parietal lobe holds primary somatosensory cortex, not hearing. The occipital lobe holds primary visual cortex. The insular lobe lies deep in the lateral sulcus beside auditory cortex and handles taste and interoception, which is why it is confused with the auditory area.

Correct answer: To act as the primary inhibitory neurotransmitter.

GABA opens chloride channels and hyperpolarises its targets throughout the brain and spinal cord, so its function is to act as the primary inhibitory neurotransmitter of the central nervous system, the brake that benzodiazepines and barbiturates enhance. The leading excitatory neurotransmitter is glutamate, GABA's own metabolic precursor, which depolarises neurons rather than inhibiting them. The chief modulator of appetitive drive describes slow hypothalamic modulators such as serotonin and orexin that shape hunger, not the fast inhibitory signal GABA carries. The primary modulator of reward drive describes dopamine in the mesolimbic pathway, not GABA.

Correct answer: Touch and bodily sensation.

The somatosensory cortex on the postcentral gyrus holds a body map and processes touch and bodily sensation. That covers pressure, vibration, temperature and pain. Movement and motor control belong to the motor cortex on the precentral gyrus just in front of it. Posture and motor balance depend on the vestibular system and cerebellum. Visceral hunger and thirst are regulated by the hypothalamus and sensed through the insula.

Correct answer: Pituitary gland

The pituitary gland is called the master gland because its tropic hormones (TSH, ACTH, LH, FSH) direct the thyroid, adrenal cortex and gonads. The hypothalamic nuclei control the pituitary through releasing hormones, but they are neural tissue in the brain, not the gland given the master label. The adrenal gland is a target of pituitary ACTH rather than a controller of other glands. The adrenal cortex, likewise, secretes cortisol on the pituitary's command and does not direct other endocrine glands.

Correct answer: To carry electrical impulses away from the cell body.

An axon exists to carry electrical impulses away from the cell body toward terminals on other neurons, muscles, or glands, which is why the action potential travels in one direction. Collecting signals onto a dendrite spine is the receiving job of dendrites, the opposite end of the cell. Building fresh messenger stocks inside the soma is synthesis, done by ribosomes and Golgi in the cell body. Wrapping fatty insulation around the shaft is the work of glia, not of the axon itself.

Correct answer: It activates the muscles for voluntary movement.

At the neuromuscular junction acetylcholine binds nicotinic receptors on the muscle fibre and activates the muscles for voluntary movement, which is why curare and botulinum toxin cause paralysis. Suppressing skeletal tension is the reverse effect and belongs to spinal inhibitory transmitters such as glycine. Modulating mood within cortical circuitry describes serotonin and noradrenaline, and the question concerns the peripheral system. Transmitting sharp aches along afferent fibres is done by glutamate and substance P at nociceptive terminals.

Correct answer: Epilepsy

Commissurotomy was developed for epilepsy: cutting the corpus callosum stops a focal seizure from recruiting the opposite hemisphere, which is how Sperry and Gazzaniga's patients came to be studied. Dystonia is treated by botulinum injection or deep brain stimulation of the pallidum, not by callosal section. Migraine is managed pharmacologically and involves no interhemispheric spread of discharge. Dementia is a degenerative loss of tissue, and cutting a healthy tract could only add deficit.

Correct answer: A neuron fires at full strength or stays silent.

Once threshold is crossed the spike has a fixed amplitude, so a neuron fires at full strength or stays silent, and stimulus intensity is coded by rate and by how many cells respond rather than by spike size. Firing weakly or fully by stimulus level is the graded-response picture the principle rules out. A set share of cells firing and resting together describes recruitment across a population, which is a separate question from what one spike looks like. Lifting output across trials describes plasticity or fatigue, not the amplitude of a single action potential.

Correct answer: Occipital lobe

The primary visual cortex (V1), the striate cortex along the calcarine sulcus, lies in the occipital lobe at the back of the brain. The temporal lobe is wrong because it holds the ventral 'what' stream and auditory cortex, not V1. The parietal lobe is wrong because it holds the dorsal 'where' stream and somatosensory cortex that receive visual input only after V1. The fusiform gyrus is wrong because it is a higher ventral-stream region for face and object recognition, not the primary visual cortex.

Correct answer: They produce the myelin sheath around neuronal axons.

Schwann cells produce the myelin sheath around neuronal axons in the peripheral nerves, each cell wrapping one internode so that impulses leap between nodes of Ranvier. Secreting the clear fluid inside the ventricles is the job of ependymal cells in the choroid plexus. Creating tight seals along vessel capillaries is done by endothelial cells with astrocytic endfeet, and that barrier is central rather than peripheral. Delivering steady fuel to hungry neurons is astrocytic metabolic support, again a central nervous system role.

Correct answer: Influx of calcium into the electrically depolarized terminals

Vesicle fusion is set off by the influx of calcium into the electrically depolarized terminals, since the arriving action potential opens voltage-gated calcium channels and the calcium drives exocytosis. Glutamate attaching to postsynaptic receptors happens after release and on the other side of the cleft, so it cannot be the trigger. Enzymatic breakdown of acetylcholine terminates a signal rather than starting one. Reuptake by presynaptic transporters likewise clears transmitter from the cleft once signaling is finished.

Correct answer: The sodium-potassium pump and its selective potassium permeability

The resting potential of roughly negative seventy millivolts is held by the sodium-potassium pump and the membrane's selective potassium permeability: the pump exports three sodium ions for every two potassium ions imported, and the resting membrane leaks potassium far more readily than sodium, leaving the interior negative. Continuous positive ion leakage through unblocked channels would depolarize the cell rather than hold it negative. Vesicle release from dendrites is not a resting-state process and does not set membrane charge. Myelin speeds conduction along the axon but plays no part in establishing the resting voltage.

Correct answer: Past threshold each discharge reaches one fixed magnitude

The all-or-none principle means that past threshold each discharge reaches one fixed magnitude, however far the stimulus overshot that threshold. Whole circuits responding as a collective misapplies the principle to networks; it describes a single neuron. Propagation in both directions at once is prevented by the refractory period behind the advancing impulse. A bigger output from stronger stimulation is exactly what the principle denies, since added intensity is coded by firing rate instead of by spike size.

Correct answer: Raises conduction speeds through leaps between successive nodes

Myelin raises conduction speeds through leaps between successive nodes of Ranvier, the saltatory conduction that lets the impulse skip insulated stretches. Increases conduction velocity by enlarging each axon's diameter names a real speed factor, but it is axon width, not myelin. Boosts signal amplitude so every impulse swells along each axon is wrong because action potentials are all-or-none and do not grow. Boosts firing rates by lowering each axon's threshold potential is wrong because myelin insulates the axon and does not change the firing threshold.

Correct answer: Triggers skeletal muscle fibers toward forceful contraction

At the neuromuscular junction acetylcholine triggers skeletal muscle fibers toward forceful contraction by opening nicotinic receptors on the muscle membrane. It does not dampen contraction; blocking these receptors, as curare does, produces paralysis rather than relaxation of an active muscle. Brainstem coordination of the sleep-wake rhythm involves several transmitters and is not the junction's business. The principal inhibitory transmitter of the central nervous system is GABA, not acetylcholine.

Correct answer: Hyperpolarizes the cell membrane toward a markedly decreased excitability

GABA hyperpolarizes the postsynaptic cell membrane toward a markedly decreased excitability, driving the interior further from threshold so firing becomes less likely; benzodiazepines and alcohol amplify exactly this action. Converting an electrochemical impulse into a bloodstream messenger describes neuroendocrine cells of the hypothalamus, not a fast inhibitory synapse. Elevating the probability of another excitatory action potential is the effect of glutamate, the opposite result. Accelerating dopamine reuptake is a transporter function unrelated to GABA receptors.

Correct answer: Mood stability, sleep cycles, and appetite regulation

Serotonin is most associated with mood stability, sleep cycles, and appetite regulation, which is why SSRIs are used for depression and why serotonergic drugs alter sleep and eating. Arousal level, anxiety response and focus regulation describe norepinephrine, the transmitter of vigilance and the stress response. Reward seeking, motivation and movement initiation describe dopamine in the mesolimbic and nigrostriatal pathways. Arousal damping, sleep initiation and anxiety relief describe GABA, the main inhibitory transmitter targeted by benzodiazepines and sleep medications.

Correct answer: Excessive dopamine transmission within the mesolimbic pathways

The classic dopamine hypothesis attributes hallucinations and delusions to excessive dopamine transmission within the mesolimbic pathways, supported by the antipsychotic efficacy of D2 blockade and by the psychotogenic effect of dopamine agonists such as amphetamine. Lessened cortical serotonin figures in depression and in later revisions of the hypothesis, not in the classic account of positive symptoms. Acetylcholine at the neuromuscular junction governs muscle contraction and has no role in psychosis. Total loss of inhibitory restraint would produce seizures rather than the specific positive symptoms described.

Correct answer: Appraisal of emotional threat and immediate fear response

A sudden surge of reported fear on stimulation reflects the amygdala's appraisal of emotional threat and immediate fear response; it evaluates threat and drives the fear state. Release of stress hormones that sustain the fear reaction is the job of the hypothalamus and the HPA axis, which the amygdala signals but does not replace. Control of the freezing posture is organized by the periaqueductal gray. Awareness of racing heart and arousal is interoception, handled by the insula.

Correct answer: Creation of brand-new explicit long-term declarative memory traces

H.M.'s anterograde amnesia shows the hippocampus is required for the creation of brand-new explicit long-term declarative memory traces. Retrieval of remote long-term memories stored years before surgery was largely spared, which is why the loss is called anterograde. Acquiring implicit procedural motor skills such as mirror drawing was intact, since skills depend on the basal ganglia and cerebellum. Maintenance of new digits briefly stored in the short-term buffers was also normal, as his digit span showed.

Correct answer: Hunger, thirst, temperature, and pituitary hormone release

The hypothalamus most directly regulates hunger, thirst, temperature, and pituitary hormone release, which is exactly the homeostatic and endocrine work the question describes. Balance, posture, coordination, and fluid movement control belong to the cerebellum, not the hypothalamus. Foresight, judgment, inhibition, and reasoned goal pursuit are frontal-lobe executive functions. Contrast, motion, orientation, and cortical edge detection are computed in occipital visual cortex.

Correct answer: Impaired perception of visual shape

Because primary visual cortex lies in the occipital lobe, the most likely result is impaired perception of visual shape, often with blindness in part of the visual field. Impaired perception of spoken words follows damage to the temporal lobe, where auditory cortex and Wernicke's area sit. Impaired voluntary control of reach toward seen targets is optic ataxia, a parietal dorsal-stream deficit. Impaired voluntary control of gaze follows damage to the frontal eye fields in the frontal lobe.

Correct answer: Of the two hemispheres, chiefly the left

In most right-handed people, of the two hemispheres, chiefly the left controls language production, which is why split-brain patients could name objects shown to the left hemisphere but not the right. Mainly the right is wrong because the right hemisphere was largely mute in these studies. Mainly in tandem and each one equally are wrong because speech production is strongly lateralized to the left, not shared between the two hemispheres.

Correct answer: Faster heart rate, wide pupils, and glucose release

Sympathetic activation produces a faster heart rate, wide pupils, and glucose release, readying the body for fight or flight. Slow heart rate, small pupils, and bladder emptying is the parasympathetic rest-and-digest pattern. Slow heart rate, wider pupils, and bladder emptying mixes one sympathetic sign with two parasympathetic ones. Fast heart rate, tight airway, and gut peristalsis is also mixed, since sympathetic arousal dilates the airways and slows peristalsis rather than constricting and speeding them.

Correct answer: The vagal parasympathetic division

The vagal parasympathetic division returns the body to rest, slowing the heart and promoting digestion through the vagus nerve. The activated sympathetic division does the opposite, mobilizing energy during threat. The corticospinal somatic division carries voluntary motor commands to skeletal muscle and does not regulate visceral organs. The exteroceptive sensory division carries sensation inward rather than restoring resting balance.

Correct answer: REM-phase dream-heavy sleep

REM-phase dream-heavy sleep is the only stage that combines vivid narrative dreaming, rapid eye movements, a fast low-voltage EEG resembling wakefulness, and skeletal muscle atonia. N1-phase hypnagogic sleep also shows low-voltage theta activity and fleeting images, but it has slow rolling eyes and normal muscle tone. N2-phase spindle-rich sleep is marked by sleep spindles and K-complexes, not wake-like activity. N3-phase delta-wave sleep is high-amplitude slow-wave sleep with intact tone.

Correct answer: N3 sleep, marked by slowest delta

Large slow waves and a sleeper who is very hard to rouse identify N3 sleep, marked by slowest delta, the deepest non-REM stage. N1 sleep, marked by shallow drift, is the light doorway into sleep and is easy to interrupt. N2 sleep, marked by fast spindles, sits between them at moderate depth. REM sleep, marked by limp muscles, shows fast wake-like activity rather than delta waves.

Correct answer: It carries hormones through blood to distant tissues

The endocrine system carries hormones through blood to distant tissues, which is why its influence is slower and more diffuse than neural signaling. It discharges hormones along ducts to nearby tissues describes exocrine glands such as salivary and sweat glands, not endocrine ones. It pushes hormones across synapses to target tissues confuses hormones with neurotransmitters. It broadcasts hormones down nerves to muscle tissues describes electrical conduction, which hormones never use.

Correct answer: The absolute refractory period

The window in which no stimulus of any strength can trigger another spike is the absolute refractory period, when voltage-gated sodium channels are inactivated. The relative refractory period follows it, and during it a stronger-than-normal stimulus can fire the neuron, which contradicts the stem. The effective refractory period is a cardiac-muscle term for propagation, not the neuronal interval asked about. The hyperpolarizing undershoot is the dip below resting potential, which raises the threshold but does not make firing impossible.

Correct answer: Executive foresight, judgment, and restraint

Gage's injury changed his personality, planning and impulse control, so the case is cited for the frontal lobe's role in executive foresight, judgment, and restraint. Motor planning, sequencing, and fine control belong to motor and premotor cortex, and Gage's movement was spared. Speech production, grammar, and articulation are Broca's area functions, and his speech was intact. Fear learning, alarm, and arousal control are amygdala functions, not what the case illustrates.

Correct answer: The tight fit of one transmitter to its receptor

The lock-and-key analogy describes the tight fit of one transmitter to its receptor: only a molecule with the right shape binds and activates that receptor. A long lock onto the receptor is wrong because binding is brief and reversible. Enzyme breakdown in the cleft is how some transmitters are inactivated, not what the receptor analogy describes. Rapid reuptake from the cleft clears transmitter after release and is a separate step from binding.

Correct answer: Sodium ions diffused into the cell

Rapid depolarization comes from sodium ions diffused into the cell when voltage-gated sodium channels open, reversing membrane polarity toward positive. Potassium ions drawn into the axon reverses the true direction, since potassium flows outward during repolarization rather than inward during the rising phase. Calcium ions pushed into the fluid describes an outward movement that does not carry the axonal spike. Chloride ions moved into the space would leave the interior more negative, which cannot produce depolarization.

Correct answer: A thick myelin sheath with widely separated nodes

Conduction velocity rises most with a thick myelin sheath with widely separated nodes, because saltatory conduction lets the impulse jump from node to node. A stronger stimulus does not help because the action potential is all-or-none, so stimulus strength changes firing rate, not speed or amplitude. A deeper resting potential with a larger spike peak does not speed propagation either. A dense sodium channel array on a long, bare axon still conducts continuously, which is far slower than saltatory conduction.

Correct answer: The thick corpus callosum

The hemispheres exchange information across the thick corpus callosum, the broad commissural band cut in split-brain surgery. The medial medulla region governs breathing, heart rate, and other vital reflexes. The lower cerebellar lobe coordinates balance and skilled movement. The posterior pineal body secretes melatonin and carries no interhemispheric traffic.

Correct answer: Occipital feature detector cells

The orientation-selective neurons Hubel and Wiesel recorded are occipital feature detector cells, which break a scene into elementary edges and bars early in cortical vision. Peripheral retinal bipolar cells relay graded signals inside the retina and do not code orientation. Cochlear auditory receptor cells transduce sound rather than light. Ventral reflex interneuron cells link sensory to motor fibers in the cord and receive no visual input at all.

Correct answer: Expectancy-driven top-down processing

Prior knowledge and expectations shaping what is perceived is expectancy-driven top-down processing. Feature-analysis bottom-up processing builds the percept from raw features, the opposite direction of flow. Parallel distributed processing is a connectionist model of how networks compute, not the influence of expectations. Preattentive parallel processing detects simple features automatically before attention or knowledge is applied.

Correct answer: Stimulus-driven bottom-up analysis

Assembling a percept purely from incoming sensory features is stimulus-driven bottom-up analysis. Knowledge-driven top-down analysis requires exactly the stored expectations the infant does not yet have. Hue-driven color-opponent analysis concerns color coding by opposing channels, not the direction in which perception is built. Size-driven constancy-cue analysis concerns holding perceived size steady as distance changes.

Correct answer: Sensory transduction

Converting light or sound energy into neural signals is sensory transduction, carried out by receptors such as photoreceptors and cochlear hair cells. Sensory adaptation is the drop in receptor response to an unchanging stimulus. Sensory integration is the combining of signals from several senses after they are already neural. Afferent transmission is the conduction of impulses toward the brain along sensory nerves, which happens only after transduction has produced a neural signal.

Correct answer: Color and fine detail in bright light

Cones are specialized for color and fine detail in bright light and are packed into the fovea. Color and hue shading in dim twilight is wrong because cones need bright light and colour fades at dusk. Shape and faint edges in dim twilight describes rods, which work in low light without colour. Motion and quick flicker in periphery is also rod-dominated, since the periphery holds few cones.

Correct answer: Synaptic glutamate

The most abundant excitatory transmitter in the central nervous system, and the one central to long-term potentiation, is synaptic glutamate. Interneuronal GABA is its inhibitory counterpart and quiets target cells instead of exciting them. Forebrain dopamine serves reward and movement along restricted pathways rather than acting as the general excitatory transmitter. Cortical serotonin modulates mood and sleep and is far less abundant.

Correct answer: Ability to steady smooth motion

Cerebellar damage most directly costs the ability to steady smooth motion, producing unsteady gait, tremor on reaching, and clumsy sequencing. Ability to decode printed words depends on left temporal and parietal language cortex. Ability to store factual memory depends on medial temporal structures such as the hippocampus. Ability to reduce blood glucose depends on the pancreas under hypothalamic control.

Correct answer: It steers most sensory input inside the cortical target

Calling the thalamus a relay station means it steers most sensory input inside the cortical target, routing each sense except smell to its cortical area. It relays each motor signal down into the spinal column describes descending motor pathways through the brainstem. It binds each sensory signal into one unified percept describes association cortex integration, not relay. It holds each sensory trace briefly in a working buffer describes sensory memory, not the thalamus.

Correct answer: It heightens heart pace, breath depth, and arousal

Adrenaline acts as a sympathetic hormone: it heightens heart pace, breath depth, and arousal, mobilizing the body for fight or flight. The options that pair a faster pulse and alertness with more digestion or more salivation are wrong because sympathetic arousal suppresses digestion and dries the mouth; those are parasympathetic effects. Pupil narrowing is also parasympathetic, since adrenaline dilates the pupils, so that option fails even though sweating and vigilance do rise.

Correct answer: Grouping items into familiar handy units.

Chunking means grouping items into familiar handy units, so that a string of letters like FBICIA is held as two meaningful blocks and short-term capacity is spent on fewer slots. Grouping nearby shapes as single figures is the Gestalt law of proximity, a perceptual principle rather than a memory strategy. Linking items to vivid imagery is a visual mnemonic such as the method of loci. Linking items to rich meanings is elaborative encoding, which deepens processing without recoding items into larger units.

Correct answer: The habit of seeing a tool in its sole customary role.

Functional fixedness is the habit of seeing a tool in its sole customary role, which is why participants in Duncker's candle problem overlook that the tack box can serve as a shelf. The knack of finding a fresh use for a routine object is the exact reverse, the flexibility that fixedness blocks. Failing for want of raw facts is a knowledge deficit, whereas fixedness strikes people who know the object well. Using a plan drawn from past trials is mental set, a related but distinct carry-over of procedure rather than of object function.

Correct answer: The intrusion of automatic routines upon conscious control.

Naming the ink color of a color word is slowed because reading is overlearned and fires unbidden, so the task demonstrates the intrusion of automatic routines upon conscious control. Improvement of recall through spaced repeated practice is the spacing effect, a memory phenomenon with no conflict component. Influence of majority opinion over personal judgments is conformity, as in Asch's line task. Linkage of measured intelligence with reaction latency is a psychometric correlation studied by Jensen, not an interference effect.

Correct answer: Short-term memory

Rehearsing a just-heard phone number keeps it active in short-term memory, the limited store that loses items within seconds unless maintenance rehearsal refreshes them. Echoic memory is the brief auditory sensory trace that exists before any rehearsal and fades in a few seconds on its own. Episodic memory is long-term memory for personal events, where the number would go only after encoding. Procedural memory stores practised skills, not a number heard once.

Correct answer: The habit of judging an event's odds by how fast known cases spring up.

The availability heuristic is the habit of judging an event's odds by how fast known cases spring up, which is why vivid air crashes inflate estimates of flying risk. Fixing on one feature and discarding the rest is selective attention or framing, not a frequency estimate. Setting a firm value from the first figure heard is anchoring, a separate Tversky and Kahneman bias. Solving a fresh puzzle by a stock routine procedure is algorithmic problem solving, the deliberate opposite of a shortcut.

Correct answer: The shaping of perception by stored knowledge and expectation.

Top-down processing is the shaping of perception by stored knowledge and expectation, which is why a smudged word is read correctly in a sentence that predicts it. The construction of a percept from luminance and orientations is bottom-up analysis running the other way. The registering of a stimulus through sensations and reflexes is direct perception, which denies the mediating role of knowledge altogether. The dismantling of a silhouette into fragments and curvatures is feature detection, another data-driven stage.

Correct answer: Remembering to carry out an intended action on a future occasion.

Prospective memory is remembering to carry out an intended action on a future occasion, such as taking a tablet at noon, and it fails when no cue recovers the intention. Retrieving the fine details of an episode is retrospective episodic memory, which looks backward instead. Acquiring a skill through repeated drill is procedural learning and needs no intention to be recovered. Holding learned facts intact across the years is long-term retention, a question of durability rather than of remembering to act.

Correct answer: To direct and time the phonological loop and visuospatial sketchpad.

In Baddeley's model the central executive is attentional, not storage: its work is to direct and time the phonological loop and visuospatial sketchpad, allocating capacity and switching between tasks. Assembling and rotating pictorial imagery is the sketchpad's own job, one of the slave systems the executive supervises. Combining and binding episodic traces belongs to the episodic buffer, the fourth component added later. Preserving enduring memories is long-term storage, which lies outside working memory altogether.

Correct answer: Items at both ends of the list.

Items at both ends of the list. The serial position curve is the sum of two separate advantages: primacy, which favors the opening entries, and recency, which favors the final entries. Items at the front of the list names primacy alone and ignores the recency limb; items at the close of the list names recency alone and ignores the primacy limb; items at the heart of the list are recalled worst of all, since they benefit from neither.

Correct answer: Seeking and favoring input that supports one's beliefs.

Confirmation bias is seeking and favoring input that supports one's beliefs, shaping how evidence is searched for, interpreted and remembered. Keeping and defending beliefs once their basis is gone is belief perseverance. Rating and accepting arguments that suit prior beliefs is belief bias, which judges an argument's logical validity by whether its conclusion is believable. Recalling prior beliefs as fitting what happened later is hindsight bias, a distortion of memory after outcomes are known.

Correct answer: Leaning on the first number seen when judging a price.

Leaning on the first number seen when judging a price. Anchoring is the disproportionate pull of an initial value: later estimates are adjusted from that starting point and stop too soon. Leaning on the strong inner mood when judging a price is the affect heuristic, which is about feeling rather than an initial figure. Leaning on the prior fixed habit when judging a price is status quo bias, which needs no anchor at all. Leaning on the self chosen proof when judging a price is confirmation bias, which selects evidence rather than fixing on a first number.

Correct answer: Mapping a room's layout around the viewer's body.

Mapping a room's layout around the viewer's body. An egocentric representation codes position and direction relative to the observer, so it must be updated whenever the observer moves. Mapping a room's layout from other people's eyes is perspective taking, a social-cognitive skill and not a coding frame. Mapping a room's layout along one's private aims confuses motivation with spatial reference. Mapping a room's layout against fixed wall marks is the allocentric frame, which codes position relative to the environment rather than to the self.

Correct answer: Zeigarnik effect

Zeigarnik effect. Bluma Zeigarnik found that waiters recalled unsettled orders far better than settled ones, and the standard reading is that an interrupted task leaves a live goal tension that keeps the material accessible. Frequency effect is the retrieval advantage of commonly encountered words and has nothing to do with completion. Isolation effect, from von Restorff, is the recall advantage of a distinctive item in a homogeneous list. Hindsight effect is the inflated sense that an outcome was foreseeable once it is known.

Correct answer: Missing a plain object during a wholly absorbing task.

Missing a plain object during a wholly absorbing task. Inattentional blindness is a failure of attention rather than of the eye: an unexpected yet fully visible stimulus goes unreported when attentional resources are committed elsewhere, as in the gorilla and counting studies. Missing a plain object beyond the sharp central field is a limit of retinal acuity, not of attention. Missing a plain object after a lengthy unbroken watch is vigilance decrement, which builds over time rather than striking at once. Missing a plain object amid one awkward mental switch is a task-switching cost, which slows responding rather than erasing awareness.

Correct answer: Attaching each target item to one familiar walking spot.

Attaching each target item to one familiar walking spot. The method of loci is spatial: the learner deposits one item at each landmark along a well-known route, then retraces the route to retrieve them in order. Repeating each target item on four straight silent runs is maintenance rehearsal, which uses no spatial structure. Recasting each target item as one striking mental scene is imagery, which the method exploits but does not consist of, since imagery with no route supplies no retrieval order. Assigning each target item to one broader meaning class is categorical chunking.

Correct answer: A viewer misses a large scene edit spanning a brief blank.

A viewer misses a large scene edit spanning a brief blank. Change blindness depends on a disruption that masks the local motion transient: across a flicker, a saccade, or a mudsplash, even a very large alteration goes undetected. A viewer takes a false event claim arriving in later talk is the misinformation effect, a memory distortion rather than a perceptual one. A viewer loses a steady faint tone fading on longer watch is sensory adaptation, which is gradual and stimulus-driven. A viewer locks a vague shape into one early fixed reading is perceptual set, which fixes an interpretation rather than hiding a change.

Correct answer: To rate a wager loss as far outweighing a balanced gain.

To rate a wager loss as far outweighing a balanced gain. Loss aversion is a claim about the value function: its slope is steeper below the reference point, so a given loss hurts roughly twice as much as the same gain pleases. To shun a wager risking loss over a plainly bigger gain is risk aversion, a downstream behavior that loss aversion can produce but is not identical to. To reset a wager scoring loss from a newly settled gain is reference-point updating. To back a wager chasing double once a loss cancels gain is the break-even effect, a separate prediction of prospect theory.

Correct answer: Material is retained better when coded as picture and word.

Material is retained better when coded as picture and word. Paivio's claim is a memory claim: an item given both an imaginal and a verbal code has two independent routes to retrieval, so recall probability rises. Material is recalled better when two tasks run and overlap is a divided-attention claim, and dual coding predicts no such benefit. Material is handled apart by systems for signal and speech states only the architecture Paivio assumed, stopping short of the memory prediction that is the theory's point. Material is grasped better when focus and effort are split contradicts the attention literature and forms no part of the theory.

Correct answer: Price an owned asset above what the open market would pay.

Price an owned asset above what the open market would pay. The endowment effect is measured as a gap between willingness to accept and willingness to pay for the very same good, and it appears as soon as ownership is assigned. Price a delayed payoff under what its true worth would be is temporal discounting, which turns on delay rather than ownership. Prefer a stated risk over one whose odds are left unclear is ambiguity aversion, which turns on missing probabilities. Weigh a future return over the outlay a trade would cover describes ordinary forward-looking appraisal and is not a bias at all.

Correct answer: Facts a reader supplies alone outlast facts a reader reads.

Facts a reader supplies alone outlast facts a reader reads. The generation effect is a retention advantage for self-produced material: completing a word fragment or answering before being told forces retrieval and deeper processing, so the trace survives longer. Facts a reader collects slowly enlarge the store each year misreads generation as growth of capacity. Facts a reader recalls hinge upon the reader's birth epoch is a cohort claim with no bearing on encoding. Facts a reader adds recently disrupt facts a reader stored is retroactive interference, a competition effect and not a production benefit.

Correct answer: Trouble telling apart the faces of known people.

Prosopagnosia is trouble telling apart the faces of known people, a face-specific agnosia usually tied to damage in or near the fusiform face area. Trouble reading the emotions in familiar faces is an expression-recognition deficit linked to the amygdala, and prosopagnosics often read expressions normally. Trouble recalling the names of familiar figures is proper-name anomia, in which the face is recognized but the name will not come. Trouble trusting familiar faces as genuine ones is the Capgras delusion, in which faces are recognized but felt to be impostors.

Correct answer: When the inner mood at recall repeats the mood at study.

When the inner mood at recall repeats the mood at study. State-dependent learning is about the learner's internal condition: mood, arousal, or drug state acts as a retrieval cue, so matching it at test restores access. When the outer room at recall mirrors the room at study is context-dependent learning, which uses external surroundings rather than internal state. When the tested item at recall serves the goal at study describes motivated relevance, not a state match. When the time lag at recall shrinks to zero after study is simply short retention interval, which helps for every learner regardless of state.

Correct answer: Reading a vague stock trait sketch as a truly personal fit.

Reading a vague stock trait sketch as a truly personal fit. The Barnum or Forer effect turns on statements so broadly true that almost anyone endorses them, which the reader nonetheless treats as tailored. Recalling more good than grim facts in one's own life tale is the positivity bias in autobiographical memory. Playing down the strong pull of firm traits on public acts inverts the fundamental attribution error and concerns causal weighting, not self-description. Building a settled group picture from a very thin data set is stereotype formation, which is about others rather than the self.

Correct answer: A brief block on a word the speaker plainly knows.

A brief block on a word the speaker plainly knows. The tip-of-the-tongue state is a retrieval failure over an intact representation, which is why speakers reliably report the first letter, the syllable count, and the gender of the blocked word. A stale trace on a word the speaker studied first is proactive interference, where earlier learning competes. A weak entry for a word the speaker barely stored is an encoding failure, and nothing is there to retrieve. A slow fade of a word the speaker rarely revisits is decay, which is gradual and permanent rather than momentary.

Correct answer: Missing a false term in a passage that fits stored belief.

Missing a false term in a passage that fits stored belief. In the Moses illusion the substituted name shares enough semantic features with the expected one that shallow semantic processing lets the anomaly through, so readers answer the question as posed. Placing a past event in a memory that feels lately formed is forward telescoping, an error of dating. Warping a told tale in a witness that met slanted wording is the misinformation effect from leading questions. Seeking a kind claim in a report that backs settled views is confirmation bias, which selects sources rather than overlooking an error inside one.

Correct answer: Holding a first view once its backing has been torn down.

Holding a first view once its backing has been torn down. Belief perseverance is demonstrated by debriefing studies: participants told outright that their feedback was fabricated still rate themselves as they did before, because the explanations they built survive the evidence. Forming a firm view once its proof has been one anecdote is reliance on weak sampling and describes how a belief starts, not why it persists. Seeking a rival view once its case has been made clearly is disconfirmation seeking, the opposite behavior. Adopting a stated view once its source has been a leader is authority influence.

Correct answer: Press on with a course once prior money and effort went in.

Press on with a course once prior money and effort went in. The sunk cost fallacy is the honoring of unrecoverable prior investment: a rational chooser compares only marginal costs against marginal benefits, so already-spent resources should carry no weight. Judge a course on future gain and rule out the past outlay states the normative rule the fallacy breaks. Measure a course by its near term cost and its gain singly is myopic evaluation, a distinct error about time horizon. Pursue a course and deem its cash cost as beside the point is simple cost neglect, which the fallacy does not require.

Correct answer: Algorithm secures the answer; heuristic hurries toward error

Algorithm secures the answer; heuristic hurries toward error captures the contrast: an exhaustive procedure reaches the solution if carried through, while a rule of thumb buys speed at the cost of accuracy. Heuristic ensures success; algorithm gambles on random hunch reverses the two terms. Algorithm matches heuristic here; both yield certain results is wrong because only the algorithm carries a guarantee. Algorithm mirrors heuristic there; each slices rough corners is wrong because an algorithm skips nothing.

Correct answer: Representativeness, judging odds by likeness to a mental prototype

The juror is using representativeness, judging odds by likeness to a mental prototype, and so neglecting the base rate for the crime. Availability, forecasting odds by how quickly an instance surfaces, would turn on ease of recall rather than resemblance. Recognition, rating odds by picking whichever image feels familiar, turns on bare familiarity, not on a match to a stereotype. Simulation, picturing odds through how smoothly a scenario unfolds, turns on imagined ease of a sequence.

Correct answer: Chomsky's language acquisition device

The mechanism Chomsky proposed is Chomsky's language acquisition device, an innate module that lets children extract grammar from limited, imperfect input. Skinner's verbal operant conditioning is the learning account Chomsky attacked, not an innate mechanism. Chomsky's universal grammar framework names the innate principles shared by all languages, the knowledge the device works with, rather than the acquisition device itself. Pinker's language instinct is a later popularization of nativism by a different theorist, not Chomsky's own term for the mechanism.

Correct answer: Classical pairs two cues; operant makes deeds yield payoffs

Classical pairs two cues; operant makes deeds yield payoffs states the real difference: Pavlov's dog learns a bell-food association, while Skinner's rat learns that lever pressing produces pellets. Classical rules free choice; operant rules bare reflex arcs reverses the two, since it is classical conditioning that works on reflexes. Classical equals operant here; both labels name one process denies a distinction the two paradigms clearly have. Classical rests on reward charts; operant just ignores them inverts where reinforcement schedules apply.

Correct answer: Sticker supplies one positive reinforcer; removal supplies one negative

Sticker supplies one positive reinforcer; removal supplies one negative is correct: adding a desired stimulus is positive reinforcement, and removing an aversive reminder is negative reinforcement. The tangible-reinforcer option wrongly calls the removal positive, though nothing is added. Both options calling the removal a punisher confuse negative reinforcement with punishment; chore completion went up, so it is reinforcement, not punishment.

Correct answer: Proactive interference, earlier lessons blurring newer answers

French learned in the morning intrudes on Spanish learned later, so this is proactive interference, earlier lessons blurring newer answers. Retroactive interference, fresh material clouding older traces, runs the other way and would show Spanish disrupting French. Simple decay, unrehearsed impressions dissolving across months, would need time rather than competing material. Encoding failure, divided attention preventing initial storage, cannot apply because the Spanish words were learned well enough to compete.

Correct answer: Unsteady variable-ratio schedule

Payment after an unpredictable number of plays is an unsteady variable-ratio schedule, which yields the highest and steadiest responding and resists extinction because the next play might pay. Predictable fixed-ratio schedule pays after a set count and produces a pause right after each payoff. Timed variable-interval schedule pays for the first response after unpredictable time, giving slow steady rates. Calendar fixed-interval schedule pays on a clock and produces scalloped responding.

Correct answer: Photosynthesis taps semantic store; graduation taps episodic replay

Photosynthesis taps semantic store; graduation taps episodic replay is correct, because general word meanings are semantic memory while a personally experienced ceremony is episodic memory, the distinction Tulving drew inside explicit long-term memory. Photosynthesis has episodic scenery; graduation has semantic truths swaps the pair. Photosynthesis matches graduation; these count as procedural memory is wrong because procedural memory covers skills, not facts or events. Photosynthesis shows procedural drill; graduation shows broad facts misplaces both.

Correct answer: Sensory memory, then a decaying short-term store

A store lasting about half a second, followed by one holding roughly seven items for twenty to thirty seconds, is sensory memory, then a decaying short-term store. Short-term memory, then a lasting permanent file skips the iconic store the first description names. Long-term memory, then a vanishing sensory trace reverses the order entirely. Working memory, then a moment-long sensory flash also puts the fleeting store second rather than first.

Correct answer: Encoding, retention, and retrieval

The information-processing framework names encoding, retention, and retrieval as the three processes: information is converted into a usable code, held over time, and brought back when needed. Sensory, short-term, and long-term are the three stores of the multi-store model, not processes. Attention, rehearsal, and chunking are control processes that support encoding without covering retrieval. Rehearsal, chunking, and recall omits storage entirely.

Correct answer: The proven spacing effect

Five short sessions beat one cram of the same total minutes because of the proven spacing effect: distributed practice produces more durable retention than massed practice. The testing effect concerns gains from retrieval practice, and the stem varies the timing of review, not whether the student self-tests. The Zeigarnik effect is better memory for interrupted, unfinished tasks. The mere exposure effect is increased liking for repeated stimuli, not better recall.

Correct answer: Spreading network activation

In the Collins and Loftus model, activating one node automatically excites neighboring nodes along associative links, which is spreading network activation and explains why doctor speeds recognition of nurse. Sequential lexical searching describes a serial hunt through entries, which the model explicitly rejects. Layered distributed encoding describes how patterns are stored across units, not how activation travels. Proactive semantic prompting is not a mechanism in this model.

Correct answer: Whorf's linguistic relativity thesis

The idea that the vocabulary of a language shapes what its speakers perceive is Whorf's linguistic relativity thesis; the strong determinist version is largely rejected, but weaker influences of language on thought are still studied. Chomsky's universal grammar doctrine says the reverse, that deep structure is shared across all languages. Lenneberg's critical period argument concerns the age window for acquiring a first language. Warren's phonemic restoration effect concerns hearing speech sounds that were physically removed.

Correct answer: The silent phonological loop

Verbal and acoustic material is held and refreshed by the silent phonological loop, which pairs a brief speech-based store with subvocal rehearsal. The central executive system allocates attention and coordinates the subsystems rather than storing sounds. The combined episodic buffer binds information from several sources into unified scenes. The visual pattern sketchpad handles images and spatial layout instead of speech.

Correct answer: Anchoring and adjustment bias

Judging the counteroffer against the first number seen is anchoring and adjustment bias: the opening figure becomes a reference point, and people adjust too little away from it. Confirmation and belief error is the tendency to seek evidence that fits what one already believes. Reframing and phrasing effect concerns how equivalent options described in different words shift preferences. Hindsight and foresight drift concerns overrating how predictable an event was after learning the outcome.

Correct answer: Capacity tallies meaningful chunks, so grouping stretches it

Capacity tallies meaningful chunks, so grouping stretches it: Miller's span of about seven plus or minus two counts chunks, not raw digits, so packing ten digits into three familiar units carries more information in the same slots. Capacity stays at seven digits, so grouping speeds rehearsal mistakes the limit for a fixed digit count. Capacity tracks spoken durations, so short digits fit better describes the word-length effect, which grouping does not change. Capacity decays in seconds, so rehearsal keeps digits active describes duration, not capacity.

Correct answer: Chunking familiar patterns already stored in long-term memory

The master's advantage comes from chunking familiar patterns already stored in long-term memory: years of play let recurring configurations be encoded as single units. Raw short-term storage is not enlarged by expertise, which is why the advantage vanishes for random boards. Iconic detail and delayed sensory decay are perceptual properties that would help just as much on random arrangements, so neither can explain an advantage that appears only for real positions.

Correct answer: The recency effect from still-active final items

Superior recall of the last words is the recency effect from still-active final items, which remain in short-term memory at the moment of recall and disappear after a filled delay. The primacy effect reflects extra rehearsal and transfer into long-term memory instead, and it survives a delay. The von Restorff effect concerns one distinctive item standing out, and the generation effect concerns self-produced material; neither describes the tail of the serial position curve.

Correct answer: Confirmation bias privileging clues matching prior belief

The detective shows confirmation bias privileging clues matching prior belief: ambiguous evidence is read as support for the existing suspicion while contrary facts are dismissed. Anchoring bias concerns numerical or quantitative estimates that stay too close to a first reference value. Belief perseverance is clinging to a belief after its original basis has been discredited, whereas here the evidence is merely ambiguous and is being interpreted selectively. Hindsight bias is judging an outcome as predictable only after it is known, which is not the detective's error.

Correct answer: Functional fixedness limiting an object's customary role

Failing to see the paperclip as a hook is functional fixedness limiting an object's customary role: the clip is perceived only through its usual function. The Einstellung effect is a mental set, the habit of reapplying a method that solved earlier problems, not a block on one object's possible uses. Representativeness is a judgment heuristic for estimating likelihood from resemblance to a prototype, not a problem-solving block. Anchoring bias is over-reliance on an initial value when making numeric estimates, not a fixed view of an object's use.

Correct answer: Mental set reusing one earlier successful lengthy plan

Sticking with the long formula is a mental set reusing one earlier successful lengthy plan, the rigidity Luchins demonstrated with water-jar problems. Functional fixedness seeing an object in its usual use is a related fixation, but it concerns an object's function rather than a solution procedure. Belief perseverance keeping a view once evidence fails concerns beliefs, not problem-solving methods. Confirmation bias seeking evidence that backs one view concerns testing hypotheses, not repeating a solution strategy.

Correct answer: Procedural memory for practiced skills performed automatically

Riding a bicycle is procedural memory for practiced skills performed automatically, the implicit system that stores how to carry out motor sequences. Perceptual priming memory is also implicit, but it only speeds processing of stimuli met before and stores no motor sequence. Operant conditioning is a way responses are learned through reinforcement, not the memory system that holds the finished skill. Nonassociative memory, such as habituation, only changes the response to a repeated stimulus and stores no practiced action.

Correct answer: Misinformation effect altering memory through post-event hints

Loftus studied this as the misinformation effect altering memory through post-event hints, in which misleading information met after an event is absorbed into the recollection of the event itself. Proactive interference is older learning obstructing newer learning, which is not what a later false detail does. Source amnesia leaves the content intact while the origin is lost, and the spacing benefit concerns how retention improves with separated study; neither produces a false detail.

Correct answer: Neglecting the base rates through representativeness driven stereotyping

Ignoring how many farmers there are is neglecting the base rates through representativeness driven stereotyping: probability is judged by resemblance to a type rather than by category frequency. Anchoring requires an irrelevant starting number to be supplied, and none was. Loss aversion concerns valuing losses above matched gains in choices, and availability concerns judging frequency by ease of recall; neither describes discarding a known population frequency.

Correct answer: Implicit procedural memory and explicit declarative memory

The dissociation supports implicit procedural memory and explicit declarative memory as separate systems: hippocampal damage spares skill learning while blocking new conscious records of facts and events. Interference effects are competition between learned materials rather than distinct neural systems, and they would not spare motor learning selectively. Iconic and echoic stores are brief sensory registers lasting under a few seconds, and primacy with recency are list-position phenomena; neither pair maps onto preserved skills with lost facts.

Correct answer: Distributed practice and self-testing retrieval across weeks

The strongest long-term retention comes from distributed practice and self-testing retrieval across weeks, which combines the spacing effect with the testing effect. Blocked drills matched to learning styles rely on blocked practice and the unsupported learning-styles hypothesis. Spaced rereading and highlight review each month uses spacing but stays passive, so nothing is retrieved. Massed quizzing with one intensive review right before exams uses retrieval but crowds it into one sitting, which decays quickly.

Correct answer: Generation effect from producing your answers personally

The advantage for material you supply rather than read is the generation effect from producing your answers personally, because self-production forces retrieval-like work at encoding. The Zeigarnik effect is the other phenomenon in the stem, better memory for interrupted tasks, and it says nothing about who produced the material. The spacing effect concerns the timing of study sessions and encoding specificity concerns the match between study and test cues, so neither names the generation advantage.

Correct answer: Encoding specificity matching retrieval context to learning context

Better recall in the study room reflects encoding specificity matching retrieval context to learning context: external cues present at encoding serve as retrieval cues, the context-dependent memory result. State-dependent recall is wrong because it concerns a match in internal physiological state, such as being sober or intoxicated, not the room. Transfer-appropriate processing is wrong because it concerns whether the kind of processing at study fits the kind of test, not the physical setting. Mood-congruent recall is wrong because it concerns current mood favoring memories of matching emotional tone, which nothing in the stem involves.

Correct answer: Using a means-end heuristic steadily reducing remaining distance

Heading toward the exit and occasionally hitting dead ends is using a means-end heuristic steadily reducing remaining distance, a fast rule of thumb that trades the guarantee for speed. Searching each path systematically is the algorithm the computer runs, which is exactly what the person avoids. Random reinforced moves would produce no consistent bias toward the exit, and perceiving the walls as impassable barriers describes a perceptual stance rather than any search strategy.

Correct answer: Overextension covering dissimilar referents under a single term

Calling every four-legged animal doggie is overextension covering dissimilar referents under a single term, and narrowing the word corrects it. Overregularization is a grammatical error such as saying goed, not a meaning that is too wide. Telegraphic speech is the omission of function words in early two-word utterances, and fast mapping is the rapid attachment of a label after minimal exposure; neither is an over-broad meaning being narrowed.

Correct answer: That unpredictable reinforcement sustains behavior despite nonreward

The rapid return of a variable-ratio behavior shows that unpredictable reinforcement sustains behavior despite nonreward, since the animal cannot distinguish a lean stretch from the end of payoff. Continuous reinforcement is the schedule that extinguishes fastest, because the missing expected reward is detected at once. Negative reinforcement strengthens behavior by removing something aversive rather than weakening it, and punishment suppresses responding instead of raising response rates above what reinforcement produces.

Correct answer: Negative punishment for the dieter and negative reinforcement for the boss

Taking the latte away to make a behavior less likely is negative punishment for the dieter and negative reinforcement for the boss, whose removal of a tedious report makes sales calls more likely. Escape conditioning for the dieter and disciplinary penalties for the boss reverses both labels: escape conditioning would mean the dieter's own behavior was strengthened by ending something aversive, yet the latte was pleasant and the eating is being reduced, and the manager added no penalty at all. Positive reinforcement for the dieter and token reinforcement for the boss fails because nothing was added in either case and no token was delivered. Extinction schedules for the dieter and contingent punishment for the boss fails because the removed latte was never the reinforcer maintaining the eating, and nothing aversive followed the sales calls.

Correct answer: Retroactive interference from the newly learned list

New contacts disrupting last week's contacts is retroactive interference from the newly learned list, in which later learning reaches backward onto earlier learning. Proactive interference runs the other way, with the older list obstructing the newer one, which reverses the direction described. Encoding failure would mean the old contacts were never stored at all, yet they had been recalled before, and source confusion is misattributing where information came from rather than losing access to it.

Correct answer: Context-dependent memory linking recall to physical surroundings

Divers recalling best where they learned supports context-dependent memory linking recall to physical surroundings, the environmental case of encoding specificity. State-dependent recall concerns the learner's internal drug or arousal state, not the external setting that differed here. Mood-congruent recall concerns remembering material that matches one's current mood, and neither mood nor the neutral word lists changed with the setting. Transfer-appropriate processing concerns matching the type of mental processing at study and test, which did not change between land and water.

Correct answer: Deciding whether each word completes a meaningful sentence

Deciding whether each word completes a meaningful sentence forces semantic processing, the deepest level in the Craik and Lockhart framework and the one leaving the most durable trace. Rhyme judgments are acoustic and intermediate in depth, so retention is weaker. Counting vowels and inspecting letter case are structural judgments about the printed form, which leave the shallowest traces of all because meaning is never engaged.

Correct answer: Activation spreads from the bread node to connected butter

In a semantic network account, activation spreads from the bread node to connected butter, pre-activating the associate so that recognizing it takes less time. Depth of encoding describes how a word was studied, and butter was never studied here, so it cannot have been encoded more deeply. The recency effect concerns list position at recall rather than millisecond recognition speed, and priming needs no shared short-term store, since the effect appears when only bread was ever presented.

Correct answer: The unease that arises from holding two clashing beliefs.

Festinger's theory centers on the unease that arises from holding two clashing beliefs, or a belief and a behavior, which motivates the person to change one of them. An attitude inferred from watching one's own actions is Bem's self-perception theory, the rival explanation that needs no aversive state. Tension from unbalanced liking relations among three people or objects is Heider's balance theory, an earlier consistency model. Resistance to threats against one's freedom is Brehm's psychological reactance, which concerns lost choices rather than inconsistent cognitions.

Correct answer: A learner acts in ways that clash with a settled private view.

Dissonance is most likely when a learner acts in ways that clash with a settled private view: two cognitions conflict, and the tension pushes the attitude toward the behavior. A learner with no set stance infers one that fits past habits is Bem's self-perception theory, which needs no conflict. A learner senses outside pressure that curbs a valued freedom describes psychological reactance, not dissonance. A learner earns outside prizes for tasks that were once loved is the overjustification effect, in which a reward undermines intrinsic motivation.

Correct answer: The group a person embraces as wholly their own.

The group a person embraces as wholly their own. In Tajfel and Turner's account the in-group is defined by self-categorisation: membership is part of the self-concept, which is why even arbitrary minimal groups produce favoritism. The group a person treats as plainly not theirs is the out-group, the contrast category. The group a person mingles with on daily rounds confuses mere interaction with identification, and people deal constantly with groups they never join. The group a person differs from in large degree again describes an out-group, and dissimilarity is neither necessary nor sufficient for the distinction.

Correct answer: Social facilitation

Social facilitation. Zajonc's drive account explains the crossover directly: the presence of others raises arousal, arousal strengthens the dominant response, and the dominant response is correct on a well-learned task and wrong on a novel one. Collective shirking names the social loafing pattern, where individual effort drops once contributions are pooled and cannot be identified, so it predicts a decline on the simple task as well and cannot produce the crossover. Normative influence is conformity to group expectations and predicts no task-difficulty crossover. Emotional contagion is the spread of affect between people, not a change in task performance.

Correct answer: The sheer count of people standing nearby.

The bystander effect is most strongly influenced by the sheer count of people standing nearby: Darley and Latane found helping fell as group size rose, because responsibility is diffused. The ambiguity of the scene being observed does affect whether an emergency is noticed, but that is a separate factor. The rush felt by people passing the scene is the time-pressure finding from the Good Samaritan study. The victim's similarity to those watching affects who is helped, not the group-size effect.

Correct answer: Underrate the outer causes and inflate the inner traits.

Underrate the outer causes and inflate the inner traits. The correspondence bias is asymmetric: observers read another person's conduct as a sign of enduring character while discounting the pressures of the situation, as in Jones and Harris's attitude-attribution study. Overrate the outer causes and discount the inner traits is the exact reversal, which is closer to how people explain their own behavior. Calibrate the outer causes and measure the inner traits describes accurate attribution, which is what the error departs from. Disregard the outer causes and dismiss the inner traits would leave no causal account at all.

Correct answer: How people shift a stance to ease a felt clash.

How people shift a stance to ease a felt clash. The theory's central claim is motivational: inconsistency creates an unpleasant drive, and the cheapest route to reducing it is usually to move the attitude. How people match a circle to gain a warm place is normative social influence, which needs no internal inconsistency. How people link a belief to a common daily act is the attitude-behavior consistency question studied by LaPiere and by Fishbein and Ajzen, a correlational issue rather than a drive. How people yield a view to a smart sales pitch is persuasion, where change comes from an outside message rather than internal tension.

Correct answer: Social impact theory

Social impact theory, Latané's account, explains yielding to group norms as a function of the group's strength, immediacy and number of members, absorbing both normative and informational influence. Social learning theory explains acquiring behavior by observing and imitating models and their reinforcement, not conformity pressure from a majority. Social exchange theory explains relationships through costs and rewards. Social role theory explains sex differences as products of the roles men and women occupy, not why individuals yield to a group's standard.

Correct answer: Superordinate goals

Superordinate goals. Sherif dissolved the hostility only when the Rattlers and Eagles had to pool effort on tasks neither troop could manage alone, such as the sabotaged water line and the stalled truck. Continued isolation merely removes the occasions for conflict and left attitudes unchanged when it was tried. Increased rivalries is the manipulation that created the hostility in stage two. Voluntary alliances between individuals were insufficient on their own, since simple non-competitive contact at meals and films made matters worse rather than better.

Correct answer: Level with oneself on tested skill and belief.

Level with oneself on tested skill and belief. Festinger's similarity hypothesis holds that a comparison is informative only when the other is close enough to oneself for the result to be diagnostic, so people seek out near matches. Miles from oneself on tested skill and belief yields no usable information and comparisons of that kind are typically abandoned. Just above oneself on tested skill and belief is upward comparison, which occurs for self-improvement but is not the default the theory predicts. Well below oneself on tested skill and belief is downward comparison, used to protect self-esteem under threat.

Correct answer: A shared drive for calm that blocks a frank review of options.

A shared drive for calm that blocks a frank review of options. Janis defined groupthink by its symptoms of premature concurrence: dissent is self-censored, alternatives go unexamined, and the illusion of unanimity substitutes for appraisal. A common stock of values that unites a whole squad of members is group cohesion, an antecedent Janis named but not the failure itself. A steady slide in effort that besets a large crowd of workers is social loafing, a motivation loss rather than a decision defect. A marked swing in views that seizes a closed group of talkers is group polarisation, which sharpens a position without necessarily suppressing debate.

Correct answer: Showed clear signs of strain yet stayed with the orders.

Showed clear signs of strain yet stayed with the orders. The striking result of the baseline condition was the split between conduct and feeling: sixty-five per cent went to the maximum switch while sweating, trembling and protesting throughout. Refused to advance the shock past a plainly faint level describes a small minority, not the majority. Carried on through the trial in a fully unruffled state misses the distress that Milgram documented on film and in the observers' notes. Challenged the figure in charge then broke off the test is what most predictors expected and what few participants actually did.

Correct answer: Blaming our defeats on the world and our wins on skill.

The self-serving bias is blaming our defeats on the world and our wins on skill: internal causes for success, external causes for failure, which protects self-esteem. Blaming our acts on circumstance and others' on traits is the actor-observer bias, which does not depend on whether the outcome was good or bad. Blaming others' slips on their traits, not the setting is the fundamental attribution error, about judging other people. Blaming the outgroup's defeats on traits, wins on luck is the ultimate attribution error, a bias about groups rather than the self.

Correct answer: Helping a stranger at real cost to one's own gain.

Helping a stranger at real cost to one's own gain. Altruism in social psychology is defined by the cost structure of the act: the helper's outcome is worsened and the beneficiary's improved, with no expectation of compensation. Helping a partner at joint gain to one's own side is mutualism, where both parties profit at once. Helping a trader at fair odds of one's own return is reciprocal helping, which is investment rather than sacrifice. Helping a person to fully feel their own raw pain describes empathy, an emotional state that often motivates altruism but is not itself an action.

Correct answer: Deepening a bond through honest mutual telling of private facts.

Deepening a bond through honest mutual telling of private facts. Altman and Taylor's onion model has disclosure move outward in breadth and inward in depth, and reciprocity is what keeps the process going. Building a bond through brief casual meeting of fresh strangers stops at the outer layer and is what the theory contrasts with intimacy. Forcing a bond through sharp social climbing of guarded circles reads the word penetration as social mobility, which the theory never meant. Loosening a bond through quiet steady fraying of shared customs is norm erosion, a group-level process rather than a dyadic one.

Correct answer: When we explain our own bright wins.

When we explain our own bright wins. The bias is at its clearest on the self-enhancing side: a good outcome is credited to ability and effort, which is why students rate a high mark as earned and a low one as unfair. When we explain our own harsh flops is the other half of the pattern, where the cause is placed outside, so the reason given is external rather than self-serving in the sense meant here. When we explain how other folk fail and when we explain how other folk rise both concern attributions about others, which follow the actor-observer asymmetry instead.

Correct answer: The bystander effect

The bystander effect. Darley and Latane introduced diffusion of responsibility to explain why a seizure victim was helped less often as the number of believed witnesses rose: each onlooker's share of the obligation shrinks. The anonymity effect names deindividuation, the loss of self-awareness inside a crowd, which loosens personal standards instead of dividing one duty among several witnesses. The extremity effect names group polarisation, where discussion pushes an already favored position further out, so it bears on attitudes rather than on helping. The contagion effect describes the spread of behavior through a crowd, which multiplies action instead of suppressing it.

Correct answer: A push back at rules that seem to curb choice.

A push back at rules that seem to curb choice. Brehm's reactance is a motivational state aroused by a threat to a specific behavioral freedom, and it makes the forbidden option more attractive than it was before the ban. A ready bend at rules that seem to guide most is compliance, the opposite direction of response. A mild match at rules that seem to bind peers is conformity, which yields to a group standard rather than resisting a constraint. A quiet drift at rules that seem to set norms is gradual internalisation, which involves no threat and no arousal.

Correct answer: Someone does a deed that runs against a held inner creed.

Someone does a deed that runs against a held inner creed. Festinger's clearest case is counter-attitudinal advocacy: the act is public, chosen and irrevocable, so the cognition about the behavior cannot be revised and the attitude moves instead. Someone acts in ways that match a long stated public vow is consonance and generates no drive. Someone reads a note that aids a long known private view is selective exposure, which is a way of avoiding dissonance rather than a case of it. Someone shuns a place that tests a firm fixed moral rule is likewise avoidance, a defense deployed before any inconsistency arises.

Correct answer: Asking a tiny favor first so a bigger favor meets little refusal.

The foot-in-the-door technique means asking a tiny favor first so a bigger favor meets little refusal: complying with the small request shifts the person's self-image toward being helpful, so the larger request is granted to stay consistent. Opening with a large request, then backing down to a smaller one, is door-in-the-face, which works by reciprocal concession. Getting a yes at a low price and then adding the hidden costs is the low-ball technique, which exploits commitment to a decision already made rather than to a prior small favor. Lowering the price and adding bonuses before the target replies is the that's-not-all technique, a single sweetened offer rather than a two-request sequence.

Correct answer: Conformity seeking others' approval and avoiding disapproval or rejection.

Normative influence is conformity seeking others' approval and avoiding disapproval or rejection: the person goes along in order to be liked and accepted by the group. Conformity arising from uncertainty and trusting the majority's judgments is informational influence, driven by a wish to be accurate rather than a wish to be accepted. Conformity following explicit orders and yielding to legitimate authority is obedience, which needs a direct command and not a group norm. Conformity expressing authentic belief and adopting the group's standards is internalization, a genuine private change, whereas normative influence yields public compliance that fades once the group is absent.

Correct answer: The loss of self-awareness and personal restraint inside anonymous gatherings.

Deindividuation is the loss of self-awareness and personal restraint inside anonymous gatherings, where reduced identifiability weakens the usual internal controls on behavior. The decline of individual effort and accountability within cooperative groups describes social loafing, which is about effort rather than self-awareness. The suppression of dissent and skeptical evaluation among cohesive committees describes groupthink, a decision-making failure in which members remain highly self-aware. The emergence of distinct roles and prestige hierarchies across organizations is role differentiation, which increases rather than dissolves individual identity.

Correct answer: Misfortune advertises previous misconduct and fortune reflects authentic merit.

The just-world hypothesis is the belief that misfortune advertises previous misconduct and fortune reflects authentic merit, so that people get what they deserve and deserve what they get. The claim that behavior reveals enduring character and ignores immediate situational pressure is the fundamental attribution error, a bias about the causes of acts rather than about their deserved outcomes. The claim that established institutions are beneficial and income hierarchies seem inevitable is system justification, which defends the social order as a whole and says nothing about what any individual has earned. The claim that individual skill controls chance processes and dictates unpredictable outcomes is the illusion of control, which concerns influence over events, not their fairness.

Correct answer: Roughly 37 percent of answers

Asch recorded conformity to the wrong majority on roughly 37 percent of answers given across the critical trials. The figure near 75 percent is the share of participants who conformed at least once rather than the share of individual responses that conformed, which is the trap this item sets. The figure near 99 percent describes accuracy in the control condition without group pressure, and no Asch condition yielded conformity on about two thirds of the critical judgments.

Correct answer: The self-fulfilling prophecy formed by an initial expectation

A false expectation that changes the teacher's behavior and thereby comes true is the self-fulfilling prophecy formed by an initial expectation, as in Rosenthal and Jacobson's bloomers study. The just-world belief is the judgment that people deserve what befalls them, and no one here is judged as deserving. Mere exposure would require mere repetition with no change in treatment, and dissonance reduction would require the students to justify a costly choice of their own, but the causal work here is done by the teacher's altered treatment.

Correct answer: Social loafing lowering each member's contribution toward collective output

Reduced individual effort on the pooled rope task is social loafing lowering each member's contribution toward collective output, because no one's personal share can be identified or evaluated. Coordination loss is the other half of Ringelmann's finding, force wasted through mistimed pulls rather than through reduced effort, and the stem says each person exerts less force. Diffusion of responsibility is the bystander-intervention concept of an obligation to act being spread across onlookers, not the name for reduced effort on an additive task. Social compensation is the opposite effect, working harder in a group to make up for a weak partner.

Correct answer: The strength of assigned institutional roles over individual conduct

The prison study is cited for the strength of assigned institutional roles over individual conduct: randomly assigned guards and prisoners came to act out their roles. The strength of an authority figure's command over personal judgment is Milgram's obedience finding, since his experimenter gave orders rather than roles. The strength of a mistaken unanimous majority over personal judgment is Asch's line-judgment conformity result. The strength of randomly assigned group labels over personal equity is Tajfel's minimal-group finding on in-group favoritism, not role behavior.

Correct answer: Mere exposure boosting preference through simple unreflective familiarity

Liking that grows from repetition alone is mere exposure boosting preference through simple unreflective familiarity, the effect Zajonc demonstrated. The halo effect needs one known positive attribute to generalize from, and the consumer knew nothing about the brand. Foot-in-the-door needs an earlier request to have been granted, and evaluative conditioning needs the logo to be paired with an independently pleasant stimulus; the stem supplies no request and no pairing, only repeated sight.

Correct answer: Central route scrutinizing the quality of stated arguments

A motivated and able viewer is persuaded by the central route scrutinizing the quality of stated arguments, which is what elaboration means in Petty and Cacioppo's model. Both peripheral options fail because that route operates when motivation or ability is low, whether the cue is argument quantity or the speaker's appearance. Following the background music is a peripheral cue mislabeled as central, since it involves no evaluation of message content.

Correct answer: Cognitive dissonance theory explaining inflated ratings after effort

Effort justification is cognitive dissonance theory explaining inflated ratings after effort: I suffered for this clashes with this is dull, so raising the rating restores consistency, as Aronson and Mills showed. Social comparison would predict ratings copied from other people rather than driven by one's own initiation. The just-world hypothesis explains victim blaming and the fundamental attribution error explains dispositional readings of other people, so neither addresses justifying a costly choice of one's own.

Correct answer: Diffusion of responsibility scattering personal duty across spectators

The shrinking personal obligation as onlookers multiply is diffusion of responsibility scattering personal duty across spectators, the mechanism Latane and Darley identified behind the bystander effect. Pluralistic ignorance is misreading others' calm as a sign that nothing is wrong, which concerns interpreting the event rather than feeling responsible. Audience inhibition is fear of looking foolish in front of others. Social loafing is reduced effort on a pooled group task, not a failure to help a stranger.

Correct answer: People help a victim less readily when other bystanders observe

The bystander effect is the finding that people help a victim less readily when other bystanders observe than when they are alone. Sensing a diluted duty when others are watching is diffusion of responsibility, one explanation of the effect rather than its definition. Judging a crisis harmless because the bystanders look calm is pluralistic ignorance, another proposed cause. Fearing others' judgment for stepping in and appearing foolish is audience inhibition, a third mechanism, not the effect itself.

Correct answer: When the experimenter phoned his instructions from another room

Obedience fell furthest when the experimenter phoned his instructions from another room, dropping to roughly 20 percent, because the authority's physical presence is what sustains compliance. The laboratory coat is a marker of authority that supported the baseline rate rather than lowering it. Placing the learner further away raised obedience, since distance from the victim makes shocking easier, and confederates who obeyed first supplied conforming models that also raised it.

Correct answer: The foot-in-the-door technique starting from one small initial request

Signing a petition and later agreeing to donate is the foot-in-the-door technique starting from one small initial request: granting a small request shifts self-perception so a larger one is accepted. The low-ball technique is wrong because it secures a yes to one deal and then worsens that deal's terms, rather than following with a new, bigger request. The door-in-the-face technique is wrong because it opens with a large request meant to be refused, then retreats to a smaller favor, reversing the stem's order. The bait-and-switch technique is wrong because it swaps an advertised offer for a costlier one after interest is secured.

Correct answer: Just-world hypothesis assuming victims earned their own misfortune

Reasoning that the victim deserved the assault because the world is fair is the just-world hypothesis assuming victims earned their own misfortune, described by Lerner. Defensive attribution is wrong because it blames victims to reassure oneself that the same harm could not happen to oneself, not because outcomes are deserved. The fundamental attribution error is wrong because it overweights personality over situation in explaining behavior, without any belief in fairness. Dangerous-world belief is wrong because it views the world as threatening and unpredictable, the opposite of the fair world the juror assumes.

Correct answer: Groupthink silencing private doubt to preserve apparent unanimity

Janis named this groupthink silencing private doubt to preserve apparent unanimity, marked by self-censorship, illusions of invulnerability, and an unchallenged leader preference. Social loafing is reduced effort on a pooled task, but these members are withholding dissent rather than withholding work. Risky shift and group polarization both describe positions becoming more extreme through genuine discussion, whereas here the flaw is that no real appraisal took place.

Correct answer: Fundamental attribution error blaming character over passing context

Reading a stranger's stumble as clumsiness is the fundamental attribution error blaming character over passing context: an observer overweights disposition and ignores the ice and the crowd. The just-world hypothesis is the belief that victims deserve their fate, which needs a moral judgment the commuter never makes. The ultimate attribution error extends the bias to outgroup members as a group, and no group membership is involved here. Actor-observer bias is the contrast between explaining one's own acts situationally and others' dispositionally, which requires a comparison with the commuter's own behavior that the scenario never supplies.

Correct answer: In-group favoritism paired with sweeping out-group derogation

The pattern is in-group favoritism paired with sweeping out-group derogation: fans see their own side as friendly and varied and the rivals as uniformly obnoxious, which social identity theory and the out-group homogeneity effect explain. Realistic group conflict requires competition for scarce resources, and nothing here is being fought over. Group polarization is attitude intensification through group discussion, not a comparison of two groups. Scapegoating means blaming an out-group for one's own frustration, and no defeat or setback is described.

Correct answer: Sharpen the rehearsed piece and derail the unfamiliar one

Social facilitation predicts that the audience will sharpen the rehearsed piece and derail the unfamiliar one, because arousal strengthens the dominant response, and the dominant response is the correct one only when a task is well learned. Stimulating both pieces ignores that the dominant response on a novel piece is an error. Undermining both contradicts the reliable gain found on well-learned tasks, and scarcely altering either contradicts the whole audience-effect literature from Triplett onward.

Correct answer: Pluralistic ignorance misreading the calm expressions as reassurance

Each person privately worries yet infers from the others' composure that nothing is wrong, which is pluralistic ignorance misreading the calm expressions as reassurance. Evaluation apprehension is fear of looking foolish, a related inhibitor, but it explains staying quiet about a recognized emergency rather than failing to define one. Group polarization requires discussion to intensify an existing leaning, and the confederates say nothing, while deindividuation predicts less restraint rather than more.

Correct answer: Group polarization intensifying the prior average collective leaning

Cautious investors becoming more cautious after talking is group polarization intensifying the prior average collective leaning, the same process that makes an initially bold group bolder. Groupthink centers on suppressed dissent, and nothing in the stem says objections were silenced. Deindividuation concerns lost self-awareness under anonymity and social loafing concerns reduced effort on pooled tasks, so neither predicts a shift in the position the group ends up holding.

Correct answer: Erikson's psychosocial model of identity crises

Erikson's psychosocial model of identity crises is the theory built on eight successive stages, each turning on a crisis that must be resolved for healthy development. Freud's psychosexual model has five stages organized around libidinal zones, not eight psychosocial crises. Piaget's cognitive model has four stages ending in abstract operations and describes reasoning rather than crisis resolution. Kohlberg's moral model has three levels containing six stages of justice reasoning and covers moral judgment alone.

Correct answer: A window when particular abilities emerge with least effort

A critical period is a window when particular abilities emerge with least effort, since the organism is unusually sensitive to the relevant input at that time. A phase of peak stress vulnerability describes risk rather than readiness to acquire a skill. Consolidating reliance on a caregiver names one specific Eriksonian stage, not the general concept. Any stretch of rapid developmental change is too broad; growth spurts occur constantly without implying a bounded window of special sensitivity.

Correct answer: Perceptual sensory development during infancy

The visual cliff tests whether infants perceive depth, so it primarily informs perceptual sensory development during infancy. Emotional maternal referencing was studied with a shallow cliff later, but that use concerns reading a caregiver's face, not the depth perception the classic test measures. Crawling locomotor experience affects wariness at the edge but is not what the test was built to reveal. Fear conditioning requires pairing a stimulus with an aversive event, which the cliff never does.

Correct answer: Human languages worldwide share one deep innate structural foundation

Universal grammar holds that human languages worldwide share one deep innate structural foundation, a built-in design that makes rapid acquisition possible. Picking up speech through imitation plus reinforcement is the behaviorist account Chomsky argued against. Treating language as a by-product of general intelligence is the cognitive-constructivist position and denies a dedicated language faculty. Making local input the source of grammar reverses the claim, since universal grammar treats the environment as triggering a structure the child already possesses.

Correct answer: Theory of mind concerning independent perspectives in a preschool child

Theory of mind is the grasp that other people hold independent perspectives, with beliefs and desires unlike one's own, and it typically consolidates around ages four and five. Object permanence is the earlier sensorimotor grasp that a hidden thing still exists. Number conservation concerns quantity surviving a change in layout and arrives later, in the concrete operational period. Egocentrism is the failure that theory of mind overcomes, so it names the deficit rather than the achievement.

Correct answer: Sensorimotor infant stage marked by circular reactions

Object permanence is achieved in the sensorimotor infant stage marked by circular reactions, when the infant learns that an object out of sight still exists. The preoperational stage begins after permanence is already in place and is defined by symbolic but egocentric thought. The concrete operational stage is defined by logical reversals applied to tangible material. The formal operational stage is defined by hypothetical reasoning and lies roughly a decade past the achievement in question.

Correct answer: The internal thought sequence behind a private moral judgment

Kohlberg scored the internal thought sequence behind a moral judgment, asking why a respondent chose as they did rather than what they chose. The emotional response triggered by a dilemma is the focus of intuitionist accounts such as Haidt's, which Kohlberg's method deliberately set aside. Observable conduct is what Kohlberg's critics noted his stages predict poorly, so behavior is not what the theory measures. Cultural tradition is a source of variation that Kohlberg claimed his stages transcended rather than the object of his theory.

Correct answer: Traditional accounts privilege moral justice beyond compassionate care

Gilligan's charge was that traditional accounts privilege justice beyond compassionate care, sidelining the ethic of care and responsibility she found prominent in women's reasoning. Cultural difference was a separate critique, pressed by cross-cultural researchers rather than by Gilligan. Saying the traditional stages are correct as they stand is the position Gilligan explicitly rejected. Neglect of early childhood conflict is a psychoanalytic complaint and does not appear in her argument.

Correct answer: Formal operational period dominated by hypothetical deductions

Reasoning about abstract concepts and hypothetical situations defines the formal operational period dominated by hypothetical deductions, which Piaget placed from roughly age twelve onward. The sensorimotor period runs on hands-on physical exploration and reflex schemes with no representation at all. The preoperational period runs on intuitive symbolic pretense and cannot yet handle systematic logic. The concrete operational period handles logic competently but only over tangible material, breaking down as soon as the content becomes hypothetical.

Correct answer: Response magnitude declines across many repeated stimulus presentations

Habituation is the decline in response magnitude across repeated presentations of the same stimulus, and it is the workhorse method for testing infant discrimination. A response that intensifies when an unfamiliar input arrives is dishabituation or the orienting response, the complementary effect. Habits solidified by scheduled reward describe operant conditioning, which shares a root word with habituation but not a mechanism. Preserving former episodes for later reconstruction describes memory, a capacity habituation studies exploit rather than define.

Correct answer: Attachment strength shaped by pleasant tactile reassurance

Harlow's infant monkeys clung to a food-less cloth mother, showing attachment strength shaped by pleasant tactile reassurance rather than food. Attachment security shaped by consistent caregiver feeding is the drive-reduction view his study refuted. Attachment bonds shaped by imprinting in a critical period is Lorenz's work with goslings. Attachment security shaped by sensitive caregiver response is Ainsworth's Strange Situation finding in human infants.

Correct answer: Piaget's framework of cognitive advancement

Adolescent egocentrism, with its imaginary audience and personal fable, was named by David Elkind as an outgrowth of the new formal operational thinking, which places it inside Piaget's framework of cognitive advancement. Erikson's framework treats adolescence through the identity crisis rather than through a reasoning limitation. Vygotsky's framework centers on socially mediated learning and offers no account of this self-focus. Kohlberg's framework covers moral judgment only and does not address self-consciousness.

Correct answer: Microsystem with immediate face-to-face personal contact

The microsystem is the layer with immediate face-to-face personal contact, the family, classroom and peer group the person actually inhabits. The mesosystem sits one level out and consists of the links between such daily settings rather than a setting itself. The exosystem reaches the person indirectly through institutions they never enter, such as a parent's workplace. The macrosystem is the outermost layer of societal ideology and carries no direct contact at all.

Correct answer: A hasty commitment to one unexamined grown-up identity

Identity foreclosure is a hasty commitment to an unexamined grown-up identity, usually one handed down by parents, made without the exploration that would earn it. An open trial across many alternative roles is moratorium, the status defined by exploration in the absence of commitment. Vague confusion about one's place is diffusion, where neither exploration nor commitment has occurred. Fusing separate selves toward a coherent whole describes identity achievement, the outcome foreclosure short-circuits.

Correct answer: The Strange Situation laboratory procedure

Ainsworth's method for classifying infant attachment quality is the Strange Situation laboratory procedure, a sequence of separations and reunions scored for the infant's reunion behavior. The Adult Attachment Interview was developed later by Main and assesses an adult's coherent narrative about their own childhood, not an infant's behavior. The Still Face demonstration is Tronick's and probes an infant's reaction to a suddenly unresponsive parent. Parental Investment is Trivers's evolutionary account of how much each parent commits to offspring, and it is a theory rather than an assessment method.

Correct answer: Physical quantities hold steady across altered outward appearances

Conservation is the grasp that physical quantities such as number, mass and volume hold steady across altered outward appearances, so pouring water into a taller glass changes nothing. Emotional states holding steady describes temperament or affective stability and belongs to a different literature entirely. Natural resources preserved by stewardship is the everyday environmental sense of the word and is unrelated to Piaget. Behavior held steady by ethical principles describes moral consistency, which Kohlberg rather than Piaget made central.

Correct answer: Tasks a learner manages with knowledgeable adult support

The zone of proximal development covers tasks a learner manages with knowledgeable adult support but cannot yet complete unaided, which is why scaffolding is aimed there. Tasks completed alone lie below the zone and mark the level of actual development. Tasks handled as entirely theoretical concepts describe a Piagetian stage criterion rather than a Vygotskian range. Tasks acquired amid biological upsurges locate development in maturational timing, the very view Vygotsky opposed by putting social assistance at the center.

Correct answer: Sociocultural theorist Lev Vygotsky

Scaffolding is the temporary support a more capable partner supplies inside the zone of proximal development, and it belongs to the sociocultural theorist Lev Vygotsky. Piaget treated the child as a solitary constructivist who builds structures through self-directed action, leaving no role for guided assistance. Erikson's stages concern psychosocial crises rather than instructional support. Kohlberg studied the growth of justice reasoning and proposed no mechanism of assisted performance.

Correct answer: Assimilation of the animal and accommodation of the schemas

Labeling the cat doggie and then revising the class is assimilation of the animal and accommodation of the schemas, in that order: new input is first forced into an existing structure, and the structure is then changed to fit. The reversed pairing swaps the two definitions, because nothing is modified at the moment the cat is simply called doggie. Equilibration and decentration are Piagetian terms for the drive toward balance and the move beyond one salient dimension, and conservation with centration describe preoperational limits on quantity judgments rather than schema change.

Correct answer: Distressed at departure then consoled at reunion, showing secure attachment

The infant who explores, protests the caregiver's exit, and is quickly comforted is distressed at departure then consoled at reunion, showing secure attachment. Resistant infants also cry at separation, but they stay hard to soothe and mix contact-seeking with anger, whereas this infant settles quickly. Avoidant infants are unfazed by the exit and turn to toys instead of the caregiver on return. Disorganized infants show freezing or contradictory behavior at reunion, not smooth comfort and renewed play.

Correct answer: Caregiving that is consistently cold and rejecting

Caregiving that is consistently cold and rejecting is the pattern Ainsworth linked to avoidance: the infant whose bids for comfort are reliably rebuffed learns to minimise attachment behavior and to act indifferent at reunion. Erratic, patchy care produces the resistant pattern instead, because unpredictability keeps the infant preoccupied rather than dismissive. Sensitively warm care produces security, not avoidance. Visibly frightened or alarming care is the antecedent of disorganization, where the infant has no workable strategy at all.

Correct answer: Critical period, a conventional developmental term

The researcher's claim is an application of critical period, a conventional developmental term for a bounded window in which specific input must arrive for normal development, after which later exposure cannot fully compensate. Imprinting is Lorenz's rapid attachment to a moving object, one example of such a window rather than the general concept. Canalization is Waddington's idea, from his epigenetic landscape, that development is buffered toward a typical outcome despite varied input. Neural pruning is the removal of unused connections, a mechanism rather than a timing principle.

Correct answer: Trust versus mistrust, a struggle Erikson pinpointed

Trust versus mistrust is the conflict Erikson assigned to the first year, when dependable feeding, holding and responsiveness teach the infant that the world can be relied on. Autonomy versus shame belongs to the toddler who is testing self-control, so it comes after the period described. Initiative versus guilt covers the preschooler who plans and undertakes activities. Industry versus inferiority covers the school-age child judging their own competence, far later than infancy.

Correct answer: Industry versus inferiority in Erikson's staged model

Industry versus inferiority is Erikson's middle-childhood crisis, resolved favorably when school tasks, chores and peer activities give the child a settled sense of competence; failure leaves a sense of inferiority. Identity versus role confusion is wrong because it belongs to adolescence, after the age band given. Intimacy versus isolation is wrong because it concerns forming committed partnerships in early adulthood. Generativity versus stagnation is wrong because it concerns midlife investment in the next generation.

Correct answer: Clinging to the cloth mother when startled, showing comfort outweighs food

Harlow's monkeys clung to the cloth mother when startled and used her as a base, showing that comfort outweighs food in the formation of the bond. They visited the wire surrogate only long enough to feed, so the claim that milk builds affection is exactly what the study refuted. They did not distribute time at random between the two surrogates; preference for the cloth figure was marked and stable. Nor did they retreat from both: an inanimate cloth surrogate was accepted, so a live caregiver was not required.

Correct answer: Postconventional morality, a level in Kohlberg's ladder

Appealing to the worth of human life over a seller's profit is postconventional morality, Kohlberg's highest level, where judgments rest on self-chosen ethical principles that can override particular laws. Conventional morality is wrong because that level anchors judgments in social approval and in maintaining law and order for their own sake. Preconventional morality is wrong because it weighs punishment and personal payoff. Premoral judgment describes the stage before moral rules are represented at all.

Correct answer: Preconventional morality, a canonical Kohlberg level

Reasoning that an act is wrong because an officer might catch you and punish you is preconventional morality, where consequences to the self decide the judgment. Conventional morality is wrong because it would appeal to being a good citizen or upholding the law itself rather than to getting caught. Postconventional morality is wrong because it would invoke principles such as justice or the general welfare. Autonomous morality is Piaget's term for judging by intent and mutual agreement, not by threat of punishment.

Correct answer: The relative weight of genes and rearing across traits

Twin studies comparing identical twins reared apart with fraternal twins estimate the relative weight of genes and rearing across traits, the nature-nurture question expressed as heritability. The share of one person's own trait set by their genes is a misreading, because heritability describes variation in a population and not a single individual. The specific genes and variants underlying each trait require molecular methods such as genome-wide association studies, which twin designs cannot provide. The stability of each trait from infancy to adult life is the stability-change question, answered by longitudinal follow-up.

Correct answer: Object permanence, a much-studied Piagetian marker

The answer is object permanence, a much-studied Piagetian marker: an infant who stops searching once a toy is covered does not yet understand that objects continue to exist out of sight. Habituation describes declining attention to a repeated stimulus and is present from birth, so losing interest here is not a habituation deficit. Conservation, the grasp that quantity survives changes in shape, is a later preoperational-to-concrete achievement. Object constancy is perceiving an object as stable in size and shape despite changing views, not knowing it exists when hidden.

Correct answer: Height centration, a distinctive preoperational trait

Insisting the taller glass holds more is height centration: the child locks onto one salient dimension and ignores the compensating change in width. Object animism is wrong because it is the habit of granting life to inanimate things, which plays no part in a pouring task. Deferred imitation is wrong because it is copying an action seen earlier and is already present in late infancy. Premise deduction is wrong because reasoning from stated premises belongs to formal operations, years after this error.

Correct answer: Sensorimotor reflexes, preoperational, concrete operational, formal reasoning

Piaget's order is sensorimotor reflexes, preoperational, concrete operational, formal reasoning: infancy, roughly two to seven, seven to eleven, then adolescence. Putting formal reasoning second, right after sensorimotor, skips the two childhood stages that abstract hypothetical thought depends on. Opening with preoperational mistakes the prefix 'pre' for the first stage, when sensorimotor infancy precedes symbolic thought, and that sequence also places formal reasoning before concrete operations. Starting with preoperational and then formal reasoning compounds both errors, since concrete logic must come before abstract reasoning rather than at the end.

Correct answer: Disorganized attachment, one well-known category

Contradictory reunion behavior such as approaching while looking away, freezing, or appearing dazed is coded as disorganized attachment, the category Main and Solomon added to Ainsworth's original three. Secure attachment is wrong because the secure infant has a coherent strategy: seek the caregiver, take comfort, resume play. Insecure-avoidant is wrong because avoidance is itself an organized strategy of minimising attachment signals. Insecure-resistant is wrong because that infant maximises distress signals rather than breaking down into contradictory behavior.

Correct answer: Telegraphic speech, one classic developmental label

Two-word utterances such as 'more milk' that carry content words and drop articles, auxiliaries and prepositions are called telegraphic speech, by analogy with a telegram. Canonical babbling is wrong because it is the repetitive consonant-vowel play of the months before real words appear. Holophrastic speech is wrong because it names the single-word period in which one word stands for a whole idea. Overregularized forms are wrong because they are rule errors such as 'goed', not a stage defined by utterance length.

Correct answer: Has absorbed a general rule and is extending it broadly

Overregularization shows the child has absorbed a general rule and is extending it broadly, applying the regular past tense and plural endings even to irregular words such as go and foot. Stretching a word's meaning and using it broadly is overextension, a semantic error such as calling every animal doggy, not a grammatical one. Fast-mapping a word's meaning describes rapid vocabulary learning after a single exposure. Being praised for regular forms is a reinforcement account, but no adult models or rewards goed, so imitation and reinforcement cannot explain the error.

Correct answer: Theory-of-mind ability, a standard early milestone

Answering that Sally will search the basket requires theory-of-mind ability: the child must represent a belief that is both false and different from what the child knows. Object permanence is wrong because it concerns whether a hidden object still exists, which even the failing three-year-old accepts here. Liquid conservation is wrong because it concerns quantity surviving a change of container. Egocentric speech is wrong because it describes talking aloud without adapting to a listener, not tracking another person's belief.

Correct answer: Zone of proximal development

Vygotsky called the span between solo performance and assisted performance the zone of proximal development, and he held that instruction is most useful when aimed inside it. Scaffolding from a supporter is wrong because scaffolding is the graded help the teacher supplies, not the span of ability that help reveals. Private speech aimed inwards is wrong because it is self-directed talk that guides the child's own action. A window for critical exposure is wrong because that is a maturational timing claim from ethology, not a Vygotskian one.

Correct answer: Authoritative parenting, one well-defined Baumrind style

High warmth combined with firm but reasonable control is authoritative parenting, the style Baumrind tied to self-reliance, social competence and school success. Authoritarian parenting is wrong because it holds control high while keeping warmth low and explanation scarce. Permissive parenting is wrong because it keeps warmth high while demanding little and enforcing less. Uninvolved parenting is wrong because it is low on both dimensions and supplies neither the warmth nor the structure described.

Correct answer: Obedience alongside lowered self-regard and weaker peer skills

Strict rules, unexplained demands and little warmth predict obedience alongside lowered self-worth and weaker peer skills, the profile research links to authoritarian rearing. Independence alongside solid confidence is wrong because that is the authoritative outcome, which requires the warmth and reasoning this parent withholds. Impulsiveness alongside poor limits is wrong because that pattern follows permissive rearing, where demands are few. Detachment alongside low warmth is wrong because it follows uninvolved rearing, which lacks the heavy control described here.

Correct answer: A blended interactionist reading of nature and nurture

The ongoing, two-way interplay of inborn temperament and parenting is a blended interactionist reading of nature and nurture. A goodness-of-fit reading of temperament and parenting (Thomas and Chess) concerns how well a child's temperament matches the environment's demands, not mutual shaping over time. A diathesis-stress reading of temperament and hardship treats a predisposition that is triggered by stress, a one-way model of risk. A maturationist reading of inborn timing and unfolding (Gesell) gives the environment almost no shaping role.

Correct answer: Psychoanalytic

The psychoanalytic approach, pioneered by Freud, explains disorder through unconscious conflict and formative childhood experience, and treats it by making that material conscious. The neobehaviorist position of Hull and Tolman explains disorder through learning history and intervening drive states, and grants the unconscious no causal role. Constructivist accounts locate disorder in the personal meanings and schemas a client actively builds, which are accessible to awareness. Existentialist approaches address present freedom, choice and meaning rather than repressed early material.

Correct answer: Schizophrenia

Gregory Bateson's double bind theory was advanced as an account of schizophrenia: repeated contradictory messages from a caregiver, with no permitted escape and no permission to comment on the contradiction, were held to erode the sufferer's grip on reality. Psychasthenia is Janet's obsessional and anxious neurosis, attributed to a constitutional lowering of psychological tension rather than to paradoxical family communication. Derealization belongs to the dissociative group and is linked to trauma and detachment, not to contradictory injunctions. Thanatophobia is a specific phobia whose standard account is conditioning and avoidance learning.

Correct answer: Enhancing interpersonal skills and deliberate emotional regulation

Dialectical Behavior Therapy, developed by Marsha Linehan, is built around skills modules and is centrally aimed at enhancing interpersonal skills and deliberate emotional regulation, alongside distress tolerance and mindfulness. Challenging distorted automatic thoughts and maladaptive attitudes is the defining target of standard cognitive therapy, which DBT borrows from but does not treat as its primary focus. Reinforcing approved behavior and scheduling attractive incentives describes contingency management, an operant procedure rather than a dialectical skills program. Resolving repressed childhood conflicts and transference reactions belongs to psychodynamic work, which DBT deliberately sets aside in favor of present-focused skills.

Correct answer: Narcissistic Personality Disorder

Narcissistic Personality Disorder is defined by pervasive grandiosity, a need for admiration and a lack of empathy. Histrionic Personality Disorder also seeks attention, but through emotional display and seductiveness rather than a grandiose sense of superiority. Antisocial Personality Disorder lacks empathy, yet centers on deceit and rule violation, not on needing admiration. Obsessive-Compulsive Personality Disorder involves perfectionism and rigid control, without the grandiosity and admiration-seeking the stem describes.

Correct answer: Schizophrenia spectrum

High expressed emotion in a household, meaning criticism, hostility or emotional over-involvement, is most strongly and most consistently tied to relapse in the schizophrenia spectrum, and it is in that population that the finding was established and replicated. Affective disturbances have been studied with the same measure, but expressed emotion is not the classic or the strongest relapse predictor there. Dissociative disorders are theorized around trauma and detachment rather than around the emotional climate of the current household. Obsessional conditions relapse mainly with accommodation of rituals and with lapses in exposure practice, not with household criticism.

Correct answer: To reveal hidden personality structure and latent psychopathology

Projective techniques such as the Rorschach and the Thematic Apperception Test present deliberately ambiguous material so that the respondent's own organization of it can be read; their purpose is to reveal hidden personality structure and latent psychopathology. To estimate reasoning capacity and general intellectual abilities is the purpose of standardized intelligence scales, whose items have objectively correct answers and no ambiguity to project onto. To document memorized content and specific curricular attainments is the purpose of achievement testing, which samples taught material rather than personality. To localize cortical lesions and diagnose neurological impairment is the purpose of neuropsychological batteries, a task inkblots and story cards cannot perform.

Correct answer: Feelings experienced as natural and thoroughly consistent with one's self-image.

Egosyntonic material is feelings experienced as natural and thoroughly consistent with one's self-image, which is why traits of this kind are so seldom the reason a person seeks treatment. Symptoms recognized as foreign and profoundly distasteful to one's self-concept are egodystonic, the opposite pole of the very distinction being tested. Fragments integrated slowly into a coherent and continuous adult self-structure describes ego integration or self-cohesion, a developmental achievement rather than a quality of how material is experienced. Materials kept steadily in awareness and accessible for spontaneous self-report describes consciousness; egodystonic symptoms are equally conscious, so awareness cannot be the defining feature.

Correct answer: Cognitive Behavioral Therapy

Aaron Beck built Cognitive Behavioral Therapy out of his work on the automatic thoughts and negative schemas of depressed patients, and he devised the depression inventory that still carries his name. Existential Analysis Therapy descends from Frankl and Binswanger and treats meaning and freedom rather than distorted cognition. Psychoanalytic Group Therapy grew out of the Freudian tradition through Foulkes and Bion, the lineage Beck left behind when he broke with his analytic training. Dialectical Behavior Therapy was created by Marsha Linehan for chronically suicidal patients, decades after Beck's cognitive model was already established.

Correct answer: It remains milder and leaves occupational functioning mostly intact.

A hypomanic episode carries the same symptom picture as mania but remains milder and leaves occupational functioning mostly intact, and that reduced severity is the defining difference. The claim that it includes delusions and yields frankly disabling psychotic breaks inverts the rule, because any psychotic feature makes an episode manic by definition. The claim that it lasts considerably longer and needs unbroken week-long elevation reverses the duration criteria, since mania calls for roughly a week while hypomania needs only four days. The claim that it marks exclusively bipolar presentations and nothing lying beyond is false, because hypomania is also seen in bipolar I and in cyclothymic presentations.

Correct answer: Sensory or motor malfunctions presenting in the absence of neuropathology.

Conversion disorder, now called functional neurological symptom disorder, presents as sensory or motor malfunctions presenting in the absence of neuropathology: paralysis, blindness, gait failure or mutism that examination and imaging cannot account for. Excessive worry and growing distress over genuine but unalarming symptoms describes somatic symptom disorder, in which the bodily complaint is real and the pathology lies in the reaction to it. Deliberate faking of illness and misleading claims of physical complaints describes factitious disorder; conversion symptoms are not intentionally produced. Two or more identities unpredictably exercising control of one individual describes dissociative identity disorder, which disturbs identity rather than sensory or motor function.

Correct answer: Psychoanalytic Therapy

Transference is a psychoanalytic construct: the patient redirects feelings originally attached to early figures onto the analyst, and Psychoanalytic Therapy treats that displacement as the central material to be interpreted. Contingency Management arranges reinforcement for target behaviors and assigns the therapeutic relationship no interpretive role at all. Cognitive Reprocessing works on the content and evidence of present beliefs, not on feelings displaced from the client's past. Nondirective Listening relies on genuineness and unconditional positive regard, and treats the relationship as real rather than as a distortion to be analyzed.

Correct answer: The remodeling of external circumstances to serve the individual's requirements.

Alloplastic adaptation is the remodeling of external circumstances to serve the individual's requirements: the person acts on the world rather than altering the self. The adjusting of internal expectations to accommodate an unchanging predicament is autoplastic adaptation, the paired term and the exact complement of the alloplastic route. The rechanneling of forbidden impulses toward socially valued creative activity is sublimation, a defense that redirects a drive and leaves the environment untouched. The redirecting of emotional strain into unexplained physical bodily complaints is somatization, which relocates the difficulty into the body and changes nothing outside it.

Correct answer: Borderline Personality Disorder

Splitting, experiencing self and others as all good or all bad and flipping abruptly between idealization and devaluation, is most closely associated with Borderline Personality Disorder in both Kernberg's theory and DSM criteria. Narcissistic Personality Disorder is wrong because, although idealizing and devaluing appear in it, its defining feature is grandiosity and need for admiration, and splitting is the textbook borderline defense. Antisocial Personality Disorder is wrong because it centers on disregard for others' rights, deceit and lack of remorse. Dependent Personality Disorder is wrong because it involves submissive clinging and fear of separation rather than unstable all-good or all-bad views.

Correct answer: The connection between rising physiological arousal and task performance

The Yerkes-Dodson Law describes the connection between rising physiological arousal and task performance, an inverted U in which moderate stress helps and both very low and very high stress hurt, with the optimum falling as the task grows harder. The progression between protective denial and lingering grief acceptance is the Kubler-Ross stage account of mourning, which says nothing about arousal. The correspondence between child temperament and later caregiver bonding belongs to attachment research in the tradition of Bowlby and Ainsworth. The alignment between automatic thinking and subsequent mood improvement is the rationale for cognitive restructuring, a treatment mechanism rather than an arousal law.

Correct answer: Motivational Interviewing

Motivational Interviewing, developed by Miller and Rollnick, is built specifically to resolve ambivalence and to draw out the client's own reasons for changing, using reflection and the elicitation of change talk rather than persuasion. Reinforcement Contracting fixes rewards for agreed behavior in advance and supplies extrinsic incentives, which is the opposite of building intrinsic motivation. Psychoanalytic Uncovering pursues repressed material and early conflict, treating present ambivalence as a symptom to be interpreted rather than a target to be resolved. Person-Centered Listening provides the empathic conditions that Motivational Interviewing borrows, but it is deliberately nondirective and does not steer the client toward change.

Correct answer: Depression

Learned helplessness came from Seligman's inescapable-shock studies and became the leading laboratory model of depression: after uncontrollable outcomes, the organism stops trying even when escape is possible, matching depressive passivity. Anxiety is tied more to unpredictability and threat than to giving up. Phobias are explained by conditioning and avoidance learning, which is active escape rather than helplessness. Neuroticism is a broad personality trait from the Big Five, not the clinical condition the helplessness model was built to explain.

Correct answer: Improving communication and repairing damaged relationships

Interpersonal Therapy is organized around improving communication and repairing damaged relationships, and it works through a small set of problem areas such as grief, role disputes and role transitions in the client's present life. Uncovering unresolved conflicts and interpreting resistance belongs to psychodynamic work, which reaches into the past that IPT deliberately brackets. Disputing distorted assumptions and rehearsing alternatives is the method of cognitive therapy, which targets thinking rather than the relational context. Encouraging personal growth and pursuing self-actualization is the humanistic aim, broader and less focused than the specific interpersonal problem areas IPT addresses.

Correct answer: Underlying personality traits and serious psychopathology

The MMPI's empirically keyed clinical and validity scales describe underlying personality traits and serious psychopathology, supporting diagnosis and treatment planning. Normal-range personality traits and everyday coping style are what the NEO-PI and 16PF measure in nonclinical samples. Unconscious personality conflicts and deep hidden motives are the target of projective tests such as the Rorschach and TAT. Normal personality type preferences and workplace styles describe the Myers-Briggs Type Indicator.

Correct answer: Phobias

Systematic desensitization pairs a graded fear hierarchy with relaxation, and its classic, most common target is phobias. Compulsions in OCD are treated with exposure and response prevention, which blocks rituals rather than building relaxation. Panic attacks are treated with interoceptive exposure and cognitive therapy for catastrophic misreading of body sensations. Flashbacks in PTSD are treated mainly with prolonged exposure or cognitive processing therapy.

Correct answer: Learned Helplessness Theory

Learned Helplessness Theory, proposed by Martin Seligman, holds that repeated exposure to outcomes the person cannot control teaches an expectation of futility, and that this expectation produces the passivity and low mood of depression. Cognitive Distortion Theory locates the cause in systematic errors of inference such as overgeneralization, whether or not the stressor was uncontrollable. Monoamine Deficiency Theory attributes depression to depleted neurotransmitter activity and is a biological account rather than a learning one. Anaclitic Depression Theory follows Spitz in tracing depression to early separation from a caregiver, which is loss rather than uncontrollability.

Correct answer: Accepting unwelcome experience nonjudgmentally and committing to valued activity

Acceptance and Commitment Therapy centers on accepting unwelcome experience nonjudgmentally and committing to valued activity: thoughts and feelings are made room for rather than disputed, and behavior is steered by chosen values. Balancing radical acceptance with change through mindfulness and distress-tolerance skills is dialectical behavior therapy, which pairs acceptance with a skills curriculum for emotion dysregulation. Practicing mindfulness and decentering from distress to prevent relapse is mindfulness-based cognitive therapy for recurrent depression. Committing to a schedule of pleasant activities to reverse depressive withdrawal is behavioral activation, which lacks ACT's acceptance component.

Correct answer: Inherited vulnerability and specific stressful life experiences

The diathesis-stress model holds that disorder emerges from inherited vulnerability meeting specific stressful life experiences, so neither the predisposition nor the stressor is sufficient alone. Adaptive capacities set against environmental demands describe a coping or transactional stress model, which concerns adjustment rather than the origin of pathology. Biological predisposition paired with early trauma names one narrow instance and drops the general requirement that the trigger be a stressor of any kind. Distorted cognitions with maladaptive habits describe the cognitive-behavioral account of maintenance, not a vulnerability-trigger interaction.

Correct answer: Reshaping distorted thoughts and stubbornly unhelpful behavioral patterns

The primary goal of CBT is reshaping distorted thoughts and stubbornly unhelpful behavioral patterns: the therapist and client identify faulty cognitions, test them against evidence, and change the behaviors they drive. Accepting distressing thoughts while committing to valued action is the goal of acceptance and commitment therapy, which deliberately does not try to change thought content. Extinguishing conditioned responses through reinforcement is classic behavior therapy, which leaves cognition out. Observing thoughts with nonjudgmental acceptance is the mindfulness stance of MBCT and DBT rather than the restructuring aim of CBT itself.

Correct answer: Lessened interest or pleasure in most activities

The second required anchor is lessened interest or pleasure in most activities, the anhedonia criterion: an episode must include either depressed mood or this feature. Recurrent thoughts of death count toward the five-symptom total but cannot satisfy the anchor requirement on their own. Noticeable change of weight or appetite is likewise an ordinary criterion symptom rather than a gatekeeping one. Slowed thinking or indecision is also merely counted, so an episode assembled from these three alone would not qualify.

Correct answer: Generalized anxiety disorder, one much-quoted diagnosis

Uncontrollable worry across work, finances and family on more days than not for eight months, with restlessness and muscle tension, fits generalized anxiety disorder, one much-quoted diagnosis requiring at least six months of such worry. Adjustment disorder with anxiety is wrong because it needs an identifiable stressor and should resolve within six months of that stressor ending. Illness anxiety disorder is wrong because its worry centers on having or getting a serious illness, not on work, money and family. Persistent depressive disorder is wrong because, although it also uses the more-days-than-not wording, its core is chronic depressed mood lasting two years, not worry with tension.

Correct answer: Bipolar I disorder, a widely-referenced entry

A week of elevated, expansive mood with reduced need for sleep, grandiosity and pressured speech that impairs work is a full manic episode, and a single manic episode establishes bipolar I disorder even before the depressive episodes are counted. Bipolar II disorder is wrong because it requires hypomania, which by definition falls short of marked impairment. Cyclothymic mood disorder is wrong because its highs and lows stay below full episode thresholds for two years. Persistent depressive disorder is wrong because it is chronic low mood with no elevated phase at all.

Correct answer: Instability of bonds, self-image and mood with impulsivity

Borderline personality disorder is defined by instability of bonds, self-image and mood with impulsivity, often alongside frantic efforts to avoid abandonment and recurrent self-harm. Instability of shallow emotion with a deep need for notice describes histrionic personality disorder, which lacks the identity disturbance and stormy relationships. Grandiosity, a need for admiration and a lack of empathy define narcissistic personality disorder. Impulsivity with lack of empathy and disregard for others' rights defines antisocial personality disorder, whose core is violation of others rather than unstable identity.

Correct answer: Classical pairing of the animal with a painful bite

The fear was acquired by classical pairing of the animal with a painful bite: a neutral stimulus that precedes an aversive one comes to elicit fear by itself, the mechanism Watson and Rayner demonstrated with Little Albert. Learning by observing another person's fear is wrong because this child was bitten rather than watching anyone. Operant shaping is wrong because escape reinforcement maintains avoidance once fear exists but cannot install it. Inborn preparedness is wrong because it explains why certain fears are acquired readily, not the pairing that created this one.

Correct answer: Cognitive restructuring, one belief testing technique

Identifying an automatic thought and weighing the evidence for and against it in session is cognitive restructuring, one belief testing technique at the heart of cognitive therapy. Cognitive defusion is wrong because this ACT technique teaches the client to step back from a thought without judging whether it is true. A behavioral experiment is wrong because it tests a prediction by acting in real life and gathering new data, not by reviewing existing evidence verbally. The downward arrow is wrong because it follows a thought's implications to uncover a core belief rather than evaluating the evidence for it.

Correct answer: The manual's chapter on psychotic conditions

Schizophrenia, schizoaffective disorder and delusional disorder sit together in the manual's chapter on psychotic conditions, titled schizophrenia spectrum and other psychotic disorders and unified by delusions, hallucinations and disorganized thinking. The personality chapter is wrong even though schizoid and schizotypal personality disorders share the prefix; only schizotypal is cross-listed in the psychotic chapter, and the three named conditions are not personality patterns. The bipolar chapter and the depressive (affective) chapter are wrong because they are organized around mood episodes; schizoaffective disorder carries mood symptoms but is placed with the psychotic disorders because psychosis persists outside those episodes.

Correct answer: Projection, one well-established defense mechanism

Disowning one's own anger and insisting that others are hostile is projection, the defense that relocates an unacceptable impulse into another person. Introjection is wrong because it runs the other way, taking another person's qualities or standards inside the self. Sublimation is wrong because it channels the impulse into a socially valued pursuit rather than assigning it elsewhere. Displacement is wrong because the impulse stays the person's own and is merely redirected onto a safer target.

Correct answer: Obsessions and compulsions

The intrusive, unwanted contamination thoughts are obsessions and the ritualized handwashing done to neutralize them is a compulsion, so the pair in order is obsessions and compulsions. Compulsions and obsessions reverses the order the stem asks for with respectively. Intrusion symptoms and avoidance are the PTSD criterion clusters for re-experiencing a trauma and steering away from reminders, not OCD's thoughts and rituals. Intrusion symptoms and compulsions mislabels the obsessions with the PTSD term, which refers to trauma memories rather than contamination thoughts.

Correct answer: Positive symptoms, as psychiatry classifies them

Hallucinations and delusions add something to normal experience, so they are positive symptoms, as psychiatry classifies them. Negative symptoms are wrong because they are losses of normal function, such as flat affect, alogia and avolition. Disorganized symptoms are wrong because they cover disorganized speech and grossly disorganized behavior, which are sometimes grouped separately but do not include hallucinations or delusions. Cognitive symptoms are wrong because they involve deficits in attention, working memory and executive function rather than added perceptions or beliefs.

Correct answer: Humanistic therapy versus psychodynamic therapy

Working toward self-actualization through unconditional positive regard, empathy and genuineness, with attention on present growth rather than repressed conflict, is exactly humanistic therapy versus psychodynamic therapy. Behavioral therapy versus interpersonal therapy is wrong because neither pole rests on unconditional positive regard, and both are structured, problem-focused approaches. Time-limited therapy versus exploratory therapy is wrong because it contrasts duration and format, not theory of change. Pharmacologic therapy versus relaxation therapy is wrong because no medication or arousal-reduction procedure is described here.

Correct answer: Joseph Wolpe

Systematic desensitization, which pairs deep muscle relaxation with a graded hierarchy of feared scenes so that relaxation displaces anxiety, was developed by Joseph Wolpe and rests on his principle of reciprocal inhibition. Hans Eysenck argued forcefully for behavior therapy and against psychoanalysis but did not devise this procedure. Albert Ellis founded rational emotive behavior therapy, a cognitive disputation method rather than a counterconditioning one. Orval Mowrer proposed the two-factor account of avoidance and the bell-and-pad treatment for enuresis, not this relaxation hierarchy.

Correct answer: Autism spectrum disorder, one established diagnosis

Persistent social-communication deficits plus restricted, repetitive behavior with early onset point to autism spectrum disorder, one established diagnosis, the single DSM-5-TR label. Social communication disorder is a real, newer diagnosis, but it applies only when restricted, repetitive behavior is absent. Asperger's disorder was a DSM-IV category and was folded into autism spectrum disorder in DSM-5. Pervasive developmental disorder was the DSM-IV umbrella heading, not a diagnosis given in DSM-5-TR.

Correct answer: Positive symptoms such as delusions and hallucinations

Blocking dopamine D2 receptors works best against positive symptoms such as delusions and hallucinations, the pharmacological pillar of the dopamine hypothesis. Negative symptoms such as flattening and disengagement are wrong because they respond poorly to D2 blockade and can even deepen under it. Cognitive symptoms are wrong because inattention and memory failure are largely untouched by these drugs. Depressive symptoms are wrong because low mood in schizophrenia is addressed on its own terms rather than by dopamine blockade.

Correct answer: A pervasive disregard for and breach of others' rights

Antisocial personality disorder is defined in adulthood by a pervasive disregard for and breach of others' rights, with deceit, impulsivity and lack of remorse, preceded by conduct disorder before age fifteen. A pervasive instability of self-image, moods and bonds is borderline personality disorder. A grandiose self-image and exploiting others is narcissistic personality disorder, where exploitation serves the need for admiration rather than defining the pattern. A suspicion that others plot harm and deceit is paranoid personality disorder.

Correct answer: The irrational beliefs formed about the event

In Ellis's ABC model the activating event does not produce the emotional consequence directly; the irrational beliefs formed about the event do, which is why therapy disputes those beliefs. Buried childhood conflicts awakened by the event is the psychodynamic account Ellis explicitly set himself against. A reward schedule operating after the event is the behavioral account, which skips the belief step altogether. Chemical imbalances in the nerves is a biological account that plays no part in the ABC framework.

Correct answer: Differential diagnosis requires excluding other plausible explanations

Requiring a clinician to rule out medical conditions and substance effects is the principle that differential diagnosis requires excluding other plausible explanations: the label is assigned only once competing accounts of the presentation have been eliminated, which is why DSM-5-TR criteria sets carry explicit exclusion clauses. Hierarchical diagnosis is a different rule about which of two co-occurring syndromes takes precedence, not about medical rule-out. Provisional diagnosis is a recording convention used when information is still incomplete, and it does not require excluding anything. Dimensional scoring rates how severe a symptom is once a diagnosis exists, so it cannot be the principle that governs whether the diagnosis is assigned at all.

Correct answer: Recurrent panic disorder

Recurrent panic disorder is the match: unexpected surges of intense fear peaking within minutes, with palpitations, breathlessness and fear of dying, followed by persistent worry about further attacks. Generalized anxiety disorder involves chronic diffuse worry about many topics, not discrete attacks. Social anxiety disorder can produce panic, but only cued by feared social scrutiny, whereas these attacks are unexpected. Recurrent depressive disorder involves repeated episodes of low mood lasting weeks, and the fear here comes in surges that peak within minutes.

Correct answer: Severe major depression that has resisted medication trials, especially with high suicidal risk

Severe major depression that has resisted medication trials, especially with high suicidal risk, is the standard indication for electroconvulsive therapy, which is chosen when a rapid response is needed because the patient is acutely suicidal, refusing food, or has failed adequate drug trials. A chronic animal phobia is treated with continued exposure work rather than convulsive therapy, and failure of exposure calls for better-designed exposure. Rigid perfectionistic traits form a personality pattern, which is addressed through psychotherapy over time and does not respond to electroconvulsive treatment. Mild, recent-onset anxiety in a student sits at the opposite end of the severity range and would be managed with brief psychotherapy or watchful waiting.

Correct answer: Exposure therapy

Exposure therapy is the technique described: the client approaches the feared situation in real life, step by step and repeatedly, while avoidance and escape are blocked so anxiety can habituate. Flooding therapy is wrong because it confronts the client with the most feared situation at full intensity at once rather than gradually. Implosive therapy is wrong because it floods the client with exaggerated feared scenes in imagination, not graded real-life approach. Aversion therapy is wrong because it pairs an unwanted behavior with an unpleasant stimulus to suppress an urge, not to let anxiety decline.

Correct answer: Persistent depressive disorder

Persistent depressive disorder, the diagnosis formerly called dysthymia, is defined by depressed mood for most of the day, more days than not, across at least two years in adults, with no symptom-free stretch longer than two months. Uncomplicated major depression is an acute episode requiring five symptoms across a two-week span, so its time course is far shorter and its symptom load heavier than the chronic low-grade picture described. A prolonged bereavement reaction is tied to the death of a specific person and organized around yearning for that person, which the description does not mention. Alternating hypomanic episodes would signal a bipolar course, and no elevated period appears here.

Correct answer: Splitting others

Splitting others is the defense described: positive and negative qualities are never integrated into one whole person, so the caregiver is experienced as entirely good on one day and entirely bad on the next. Isolating affect strips the feeling away from a memory while the facts are still recalled, which produces flat retelling rather than swinging idealisation. Projecting fault attributes one's own unacceptable impulse to someone else, which would make the caregiver seem hostile but would not produce alternating adoration. Displacing anger redirects a feeling from its real target onto a safer one, which changes who receives the affect rather than reversing how the same person is valued.

Correct answer: Individuals with borderline personality disorder and chronic suicidality

The approach is dialectical behavior therapy, built by Marsha Linehan for individuals with borderline personality disorder and chronic suicidality, and its four skills modules of mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness sit inside an explicit balance of acceptance and change. It was not created for circumscribed animal phobias, which were already well served by graded exposure and need no dialectical framework. It was not designed for acute mania with psychotic grandiosity, where pharmacological stabilisation comes first and skills training cannot be delivered. Adaptations for autistic children exist, but the original target population was not autism.

Correct answer: Established bipolar I disorder

Established bipolar I disorder is the diagnosis, because one lifetime manic episode fixes it no matter how many depressive episodes occur, and this man's episode included reckless spending and psychotic grandiosity. Documented bipolar II disorder requires hypomania only and is excluded once a full manic episode has occurred. Documented unipolar depression, major depressive disorder, is ruled out the moment mania appears. Schizoaffective disorder, bipolar type, requires psychotic symptoms for two weeks or more outside any mood episode, whereas his psychosis occurred only during the manic episode.

Correct answer: The consistency of results when the same respondents retake one unchanging assessment.

Test-retest reliability is the consistency of results when the same respondents retake one unchanging assessment, and it is estimated by correlating two administrations separated by an interval. The similarity of outcomes across two equivalent forms of one standardized instrument is parallel-forms reliability, which varies the version rather than the occasion. The overlap of ratings from independent judges scoring one identical recorded session is inter-rater reliability, which varies the scorer rather than the occasion. The correspondence of a questionnaire to the underlying attribute its author targeted is a question about validity, and a test can be perfectly stable over time while measuring the wrong thing.

Correct answer: Preserving a false null hypothesis despite a substantial difference.

A Type II error is preserving a false null hypothesis despite a substantial difference: the effect is really present and the study fails to detect it, which is why its rate beta is the complement of power. Dismissing a valid null hypothesis after a coincidental fluctuation is a Type I error, the opposite mistake and the one alpha controls. Discarding an invalid null hypothesis given ample statistical power is not an error at all but the correct decision a well-powered study is designed to reach. Setting a lenient null hypothesis threshold during initial planning describes the choice of a significance level, a decision taken before data collection rather than a mistaken inference.

Correct answer: The degree of match between a questionnaire and the theoretical attribute it measures.

Construct validity is the degree of match between a questionnaire and the theoretical attribute it measures, and because that attribute is never observed directly the case for it is assembled from convergent and discriminant evidence. The effectiveness of a scale in forecasting a particular future criterion or behavior is predictive validity, which needs a criterion and no theory of the construct whatever. The steadiness of values when different tools and other observers are repeatedly used is a reliability question, and a perfectly consistent instrument can still measure the wrong attribute. The closeness of a new instrument to an accepted and authoritative external benchmark is concurrent or criterion validity, which presupposes a gold standard rather than a construct.

Correct answer: Comparing several different age cohorts evaluated at one shared timepoint.

A cross-sectional design works by comparing several different age cohorts evaluated at one shared timepoint, which makes it fast but leaves age confounded with cohort membership. Following one stable set of participants across successive calendar years is a longitudinal design, the direct alternative that spends time in order to escape cohort effects. Recording identical variables from the sample on repeated later occasions is a repeated-measures approach, which again needs more than a single occasion. Manipulating an allocated treatment condition to show true causal effects describes a true experiment; cross-sectional work is observational and manipulates nothing.

Correct answer: Analysis of variance

Analysis of variance is built for exactly this case: it partitions total variability into between-group and within-group components and tests whether three or more independent group means differ, without inflating error the way repeated pairwise comparisons would. Student t comparison handles only two means at a time, so covering three or more groups would take several tests and would drive the false positive rate well above the nominal level. Chi square crosstabs test whether counts are distributed independently across categories, which needs frequencies rather than means. Pearson r estimation quantifies the linear association between two continuous variables and tests no group means at all.

Correct answer: To keep both volunteers and investigators ignorant of the allocated condition.

A double-blind procedure is used to keep both volunteers and investigators ignorant of the allocated condition, so neither participant expectancy nor experimenter bias can shape the results. Keeping treatment and placebo recipients unaware of which pill is the dummy blinds only the participants, which is a single-blind design; the 'double' refers to two parties, not two groups. Keeping raters and statisticians ignorant of each subject's arm blinds only the research team's side, leaving participants' expectations and placebo effects uncontrolled. Testing both groups twice, before and after dosage, describes a pretest-posttest design, which measures change but conceals nothing from anyone.

Correct answer: It captures graded intensity of opinion across ordered response categories.

The advantage of a Likert scale is that it captures graded intensity of opinion across ordered response categories, so a respondent can show how strongly a view is held rather than merely whether it is held. It demands a binary verdict between two diametrically opposed alternatives describes the dichotomous item that the Likert format was invented to replace. It generates genuine interval data requiring few extra scaling assumptions is false, because Likert responses are ordinal and equal spacing between categories is an assumption the researcher must defend. It eliminates reporting bias by disguising the researcher's true intention is false as well, since acquiescence and social desirability survive the format untouched.

Correct answer: The concordance of ratings delivered by several separately trained observers.

Inter-rater reliability is the concordance of ratings delivered by several separately trained observers, and it is reported with statistics such as Cohen's kappa or an intraclass correlation. The steadiness of one instrument across two widely separated administrations is test-retest reliability, which holds the rater constant and varies the occasion instead. The strength of association between two randomly varying measured quantities is simply a correlation between variables and need involve no raters at all. The coherence of individual items within a single standardized questionnaire is internal consistency, indexed by Cronbach's alpha and computed from one administration by one scorer.

Correct answer: The unintended variable shifting systematically with the applied treatment level.

A confounding variable is the unintended variable shifting systematically with the applied treatment level, so its influence cannot be separated from the effect of the manipulation. An extraneous variable varying randomly between conditions adds noise but does not bias the comparison, so it is not a confound. A moderating variable alters how strongly the treatment works and is studied as an interaction. A mediating variable carries the treatment's effect to the outcome, making it part of the causal pathway rather than a rival explanation.

Correct answer: The degree of generalization from one sample to unfamiliar settings and populations.

External validity is the degree of generalization from one sample to unfamiliar settings and populations, and it covers whether a finding survives with other people, in other places and at other times. The effectiveness of a study in pinpointing and establishing one causal explanation is internal validity, which is often highest in tightly controlled laboratory work of the kind that generalizes least well. The limitation of conclusions to the exact participants and test conditions sampled names the very restriction external validity is meant to overcome, so it states the opposite property. The dependability of repeated readings taken with one unchanged and calibrated tool is reliability, a question of consistency rather than of reach.

Correct answer: An inverse correspondence where one measure decreases as another increases.

A line sloping downward from left to right shows an inverse correspondence where one measure decreases as another increases, which is precisely what a negative correlation means. An upward relationship where both plotted scores rise together predictably would be a positive correlation and would slope the other way. A shapeless scattering where neither quantity forecasts the other reliably indicates no correlation, and it produces a cloud with no discernible slope. A proven dependence where manipulating one factor directly produces change is causation, which no scatterplot can establish however tidy the line may look.

Correct answer: To pool effect sizes and aggregate many independent trial outcomes statistically.

A meta-analysis exists to pool effect sizes and aggregate many independent trial outcomes statistically, weighting each study so that the accumulated evidence yields a single quantitative estimate more precise than any one trial. To gather rich descriptive accounts and direct quotations from published reports is qualitative synthesis, which forgoes the statistical pooling that defines a meta-analysis. To summarize one lone investigation in complete procedural and contextual detail is a case study or a research report, and combines nothing across studies. To reproduce an earlier experiment and determine whether its conclusion survives is replication, which generates a new dataset instead of aggregating existing ones.

Correct answer: To follow identical individuals repeatedly through one extended time interval.

A longitudinal design is used to follow identical individuals repeatedly through one extended time interval, so within-person change and developmental trajectories can be observed directly. Comparing distinct age groups measured simultaneously is the cross-sectional design, which confounds age with cohort. Tracking several birth cohorts over successive years to separate age and cohort is the cross-sequential design, which combines longitudinal and cross-sectional methods for exactly that purpose. Comparing same-aged people from different birth cohorts at later times is the time-lag design, which isolates cohort and time of measurement.

Correct answer: Tight interrelatedness among items measuring one common underlying attribute.

Cronbach's alpha summarizes the average intercorrelation of the items, so a high value indicates tight interrelatedness among items measuring one common underlying attribute. Unchanging scores reappearing when identical respondents retest months later is test-retest reliability, which alpha cannot speak to because it is computed from a single administration. Minimal spread across participants yielding an unusually narrow distribution would in fact depress alpha, since restricted variance lowers the covariance the coefficient depends upon. Convincing evidence for questions capturing the intended theoretical concept is construct validity, and a highly consistent scale can measure the wrong construct very consistently.

Correct answer: A design manipulating two or more separate factors within one combined study.

A factorial design is a design manipulating two or more separate factors within one combined study, crossing their levels so that the main effects and the interaction between them can all be estimated from the same participants. A design varying one lone treatment condition and measuring a single outcome is the ordinary one-way study, which by definition can produce no interaction. A design examining one factor and comparing its average effect across groups remains a single-factor comparison however many groups it involves. A design repeating one measurement and estimating how far its results cohere is a reliability study, which evaluates an instrument rather than manipulating anything.

Correct answer: The maximum obtainable score sits beneath genuine ability across the respondent pool

A ceiling effect means the top score a measure allows sits below what able people can actually do, so their results pile up at the maximum and stop separating them. A minimum that sits above the weakest performances is the mirror image, a floor effect. A compressed answer range is restriction of range, which has many causes and is not specific to the upper bound. A harsh test that depresses marks is again a floor effect, the opposite failure of the scale.

Correct answer: Group creation bypasses the randomized assignment stage in a quasi-experimental study

The defining feature is that group creation bypasses the randomized assignment stage; participants land in conditions by prior status or by convenience rather than by chance. Lottery placement is exactly what a true experiment does, so it names the design a quasi-experiment is contrasted with. Manipulating two independent variables together defines a factorial layout, which may be either true or quasi. Repeating outcome measures at several intervals defines a repeated-measures or longitudinal layout and says nothing about assignment.

Correct answer: How far study conditions reflect genuine behavioral settings in psychological research

Ecological validity is how far study conditions reflect the genuine behavioral settings in which the behavior normally occurs. Stretching conclusions beyond the surveyed participants is external validity or generalizability, a related but broader idea. Reproducing identical marks week after week is test-retest reliability, not validity at all. Capturing the intended construct is construct validity, which can be high even in an entirely artificial laboratory task.

Correct answer: Totals cluster low since the assessment proves excessively harsh for the tested sample

A floor effect is present when totals cluster at the low end since the assessment is too harsh to discriminate among weaker performers. Marks accumulating at the highest usable boundary is the reverse pattern, a ceiling effect. Lost spread in the upper brackets is likewise a ceiling problem, not a floor one. Scores that cleanly separate the weakest individuals describe a test working well at the bottom of the range, which is precisely what a floor effect prevents.

Correct answer: Supplying a baseline comparison revealing the treatment effect in a psychological experiment

A control group exists for supplying a baseline comparison revealing the treatment effect in a psychological experiment: the treated-versus-untreated difference isolates what the manipulation did. A pretest measure of each participant's change is a within-subjects pretest-posttest feature, not a control group. Confirming that results generalize beyond the experiment is external validity, established by replication and sampling. Confirming the groups began equal is the role of random assignment or pretest checks, not the control condition itself.

Correct answer: Respondents shade answers toward what others will admire during survey research

Social desirability bias is the tendency for respondents to shade their answers toward what others will admire, inflating reports of good behavior and suppressing reports of bad behavior. Being dragged into the majority view is conformity, which operates on public judgments rather than on private self-report accuracy. Preferring choices that carry a visible payoff is a decision bias about outcomes, not about self-presentation. Preserving pleasant episodes over painful ones is a memory bias and would distort recall whatever the audience.

Correct answer: Inherent situational signals point at the unstated research objective

Demand characteristics are the inherent situational signals that point at the unstated research objective, letting participants infer what is wanted and adjust accordingly. Stable personal traits shaping responses is participant reactivity of a dispositional kind, present whether or not the purpose is guessable. Eligibility rules that determine who enters the sample are inclusion criteria, a sampling matter. Data properties that dictate the analytic technique are statistical assumptions and belong to the analysis stage rather than to the setting.

Correct answer: Two instruments of one construct yield strikingly comparable outcomes

Convergent validity is demonstrated when two instruments of the same construct yield strikingly comparable outcomes, showing they converge on the intended target. Staying distinct from unrelated constructs is discriminant validity, the complementary requirement. A checklist producing stable readings months later is test-retest reliability, a question of consistency rather than of what is being measured. Predicting a separate future criterion is predictive validity, which links a measure to an outcome rather than to another measure of itself.

Correct answer: Each participant experiences the conditions in a reorganized succession

A counterbalanced design has each participant experience the conditions in a reorganized succession, so practice, fatigue and carryover are spread evenly instead of loading onto one condition. Random allocation to equivalent groups is what a between-subjects experiment does, removing the order problem by avoiding repetition rather than by rotating it. Statistical adjustment for nuisance factors happens after data collection and cannot undo a sequence effect built into the procedure. Replication under fresh circumstances tests whether a finding holds, not whether order biased it.

Correct answer: The anal stage of Freud's psychosexual sequence

Pleasure centered on retention and expulsion during toilet training, roughly ages one to three, marks the anal stage, where Freud located fixations later expressed as orderliness or messiness. The oral stage is wrong because its focus is feeding and the mouth during the first year. The phallic stage is wrong because it centers on the genitals and the Oedipal conflict from about three to six. The latency stage is wrong because it names the calmer school years in which Freud held sexual interest to be dormant.

Correct answer: Physiological and safety needs, foundational rungs

Maslow held that deficiency needs must be largely met before self-actualization can govern behavior, and the base of the pyramid is physiological and safety needs, foundational rungs on which every higher level rests. Autonomy and competence needs are the innate basic needs of Deci and Ryan's self-determination theory, not rungs of Maslow's hierarchy. Achievement and affiliation needs are McClelland's learned motives, a rival need theory with no ordered hierarchy. Transcendence and meaning needs sit beyond self-actualization in Maslow's later writing, so they cannot be a precondition for it.

Correct answer: Openness, conscientiousness, extraversion, agreeableness, neuroticism

The five factors are openness, conscientiousness, extraversion, agreeableness and neuroticism, remembered by the acronym OCEAN. Extraversion-introversion with sensation, intuition, thought and perceptions names Jungian functions carried into the Myers-Briggs typology, which sorts people into types instead of scoring continuous dimensions. Oral, anal, phallic and latency are Freud's psychosexual stages and isolation is a defense, so that list mixes developmental phases with a mechanism. Id, ego and superego are Freudian structures, libido is an energy and transference is a clinical phenomenon, and none of the five are trait dimensions.

Correct answer: A strong positive linear relationship between the two variables

A coefficient of +0.80 indicates a strong positive linear relationship between the two variables: the sign gives the direction, the absolute value gives the strength, and 0.80 sits close to the ceiling of +1. It is not a faint or random association, since values that far from zero are large by any convention used in psychology. It is not a proven causal influence, because a coefficient computed on measured data cannot rule out a third variable or settle which way any influence runs. And it is not an eighty percent overlap in variability, since the shared variance is the square of the coefficient, which is sixty-four percent.

Correct answer: Correlation does not imply causation

Correlation does not imply causation is the principle behind the objection: breakfast eaters may differ in income, sleep or parental involvement, and any of these could raise scores, so a link alone cannot show that breakfast boosts performance. Averages do not describe individuals is the ecological-fallacy warning about applying group trends to one person, but the report makes a causal claim, not an individual prediction. Samples do not describe a population concerns generalizing beyond who was studied, which the objection does not raise. Reliability does not imply validity is a measurement principle about test quality, not about causal inference.

Correct answer: A double-blind design

Keeping both the participants and the researchers who administer the pills unaware of assignment is a double-blind design, which controls placebo expectancy and experimenter bias together. A triple-blind design additionally hides assignment from the data analysts or monitoring committee, which the stem does not describe. A single-blind design hides assignment from participants only, so the administering researchers would still know. A placebo-control design describes the comparison condition, not who is kept unaware of it.

Correct answer: The dependent variable

Reaction time is the dependent variable, the outcome the experimenter measures to see whether it changes as the caffeine dose changes. A mediating variable is the mechanism through which caffeine acts, such as physiological arousal, not the recorded outcome itself. A moderator variable alters the strength of the caffeine effect, such as habitual caffeine use. A participant variable is a pre-existing characteristic like age or sex that is not manipulated; reaction time here is the measured response to the manipulation.

Correct answer: Internal validity versus external validity

The researcher is weighing internal validity versus external validity: tight laboratory control supports a causal conclusion, but the same artificial conditions threaten generalization to other settings. Discriminant validity versus face validity pairs a measure's failure to correlate with unrelated constructs against its surface appearance, neither of which is about generalization. Ecological validity versus face validity names the real-world concern but sets it against appearance, not against experimental control. Construct validity versus content validity concerns what a measure captures and how fully it samples a domain.

Correct answer: The arithmetic mean

The arithmetic mean is the measure distorted here, because every score enters the total, so the single value of 900 drags the average up to 348 and overstates a typical response that is really near 210. The observed median is simply the middle score once the values are ordered, which is 210 and is untouched by how extreme the largest value happens to be. The repetitive mode is the most frequently occurring score, also 210, and it likewise ignores the outlier. The numerical range is not a measure of central tendency at all; it describes spread, and the question asks for a typical score.

Correct answer: Around 68 percent, or 680 of 1000

Around 68 percent, or 680 of 1000, is correct: 85 and 115 sit exactly one standard deviation of 15 points below and above the mean of 100, and the empirical rule places about 68 percent of a normal distribution within one standard deviation of the mean. Barely 95 percent, or 950 of 1000, is the share lying within two standard deviations, which spans 70 to 130 rather than 85 to 115. Near 99.7 percent, or 997 of 1000, is the three standard deviation figure and covers 55 to 145. Almost 50 percent, or 500 of 1000, is simply the share on one side of the mean, which is what the halves of a symmetric curve give and not the width of a one standard deviation band.

Correct answer: The tutoring program leaves student grades unchanged

The null hypothesis is that the tutoring program leaves student grades unchanged: it asserts no effect in the population and is the statement a significance test tries to reject. Saying the program changes grades in any direction is the nondirectional, two-tailed alternative hypothesis, not the null. Saying it raises grades in one direction is the directional, one-tailed alternative the researcher hopes to support. Saying the tutored and untutored sample means are identical is wrong because hypotheses concern population parameters; sample means almost never match exactly even when the null is true.

Correct answer: An operational definition

Specifying aggression as the number of button presses that deliver a loud noise is an operational definition: an abstract idea is restated as the exact observable procedure used to measure it, so another laboratory can reproduce the measurement step for step. A psychological construct is the abstract idea itself, and aggression was already that before any button was mentioned. A ratio-scale measurement describes the level of measurement of the resulting counts, which is a property of the numbers produced rather than the act of defining the concept. The demand characteristic refers to cues that let participants guess the study's purpose, which concerns how they behave rather than how the researcher defines the outcome.

Correct answer: Random sampling for selection and random assignment for group placement

A lottery giving everyone an equal chance and a coin flip deciding condition are random sampling for selection and random assignment for group placement. Stratified sampling first divides the population into strata, which the lottery did not do, and a yoked control ties a control participant's experience to a partner's rather than assigning by chance. Cluster sampling draws whole groups such as schools, not individuals. Systematic sampling takes every kth name from a list, not a lottery, and matched pairs place people by background similarity rather than by a coin flip.

Correct answer: Excellent reliability paired with damaged validity

A scale that is always exactly five pounds heavy shows excellent reliability paired with damaged validity: it repeats the same reading for the same person every time, which is consistency, yet every reading misses the true weight, which is what validity asks about. Faultless reliability joined with perfect validity is wrong because a fixed five-pound bias means the readings are never correct. Irregular reliability offset with genuine validity is wrong in the opposite direction, since this scale is not erratic at all. Haphazard reliability linked with unsound validity fails on the first half, because a measure cannot be both perfectly repeatable and haphazard.

Correct answer: Distribution B holds wider scatter among its individual scores

A standard deviation of 10 against 2 means Distribution B holds wider scatter among its individual scores. Distribution B's variance is five times that of Distribution A is a squaring error, since variance is the SD squared, making it twenty-five times larger. Distribution B bunches its values more tightly around its mean reverses the comparison. Distribution B shows a more positive skew in its score pattern confuses spread with shape, since the standard deviation says nothing about skew.

Correct answer: The outcome is significant, so the null hypothesis is rejected

With p = 0.02 against an alpha of 0.05, the outcome is significant, so the null hypothesis is rejected: data this extreme would be unlikely if the two therapies really did not differ, and the decision rule says to reject once p falls below alpha. Saying the alternative account is proven at a two percent likelihood inverts the meaning of p, which is computed assuming the null is true and is not the probability that any hypothesis is true. Saying the figures establish the null claim false beyond any dispute overstates a probabilistic decision that carries a real chance of error. Saying the therapies differ by a large practical margin confuses significance with magnitude, which only an effect size can report.

Correct answer: Temporal test-retest reliability

Giving the same questionnaire twice and correlating the two sets of scores measures temporal test-retest reliability, which asks whether a measure returns the same standing for the same person after an interval. Internal consistency reliability is estimated from a single administration by examining how the items hang together, so a second session would be unnecessary. Alternate equivalent reliability requires two different but matched versions of the instrument, and here the identical questionnaire was reused. Combined interscorer reliability concerns agreement between different people rating the same material, but this questionnaire is self-reported and no raters are involved.

Correct answer: A type one error, false positive

Rejecting a null hypothesis that is actually true is a type one error, false positive, and its rate equals the chosen alpha level. A type two error is the opposite mistake, retaining the null and missing a real effect. A type three error means answering the wrong question correctly, which is not what happened here. A sampling error with biased samples concerns how participants were drawn, not the decision about the null.

Correct answer: Its value settles quite around zero

A shapeless cloud of points with a flat best-fit line means its value settles quite around zero, because a coefficient measures how much of the pattern is linear and a flat line indicates that knowing one variable tells you nothing about the other. Its value slides toward minus unity would require points falling tightly along a downward line, which would give the fitted line a clear negative slope. Its value virtually equals plus one would require the same tight band rising instead, again with an obvious slope. Its value stays wholly unknown here is false because the coefficient is computable from the paired scores, and the scatterplot is simply a picture of the same data.

Correct answer: Low statistical power, due to a small sample

Concluding that a working medication does nothing is a Type II error, and the factor that most directly raises its risk is low statistical power, due to a small sample: power is the chance of detecting a real effect, and it shrinks as the number of participants falls. An alpha level set loosely would make rejection easier, which lowers the miss rate while raising the false-alarm rate, so it works in the opposite direction. Huge true effects are easier to detect, not harder, so a large effect in the population reduces this error rather than causing it. Even coin tosses describe how participants were allocated, which protects against confounding but has no bearing on whether a real effect is large enough to be seen.

Correct answer: A correlational study

The question asks only whether two measured traits covary, with nothing manipulated, so a correlational study is the fit: both scores are measured as they occur and their association is estimated. A quasi-experimental design compares pre-existing groups on an outcome, which would throw away the continuous range of both scores. A case-control design selects people by whether they already have an outcome and looks back for causes. A naturalistic observation records behavior in real settings rather than scores on two questionnaires.

Correct answer: An overall interaction effect

Asking whether the impact of an audience depends on how hard the task is describes an overall interaction effect, which is present whenever the influence of one factor changes across the levels of the other factor. A straightforward main effect is the average influence of a single factor collapsed across the other, so it cannot express a dependency between them. The classic regression effect describes extreme scores drifting back toward the average on retesting, which needs no second factor at all. The well-known ceiling effect is a measurement problem in which a task is too easy for scores to rise further, and it concerns the range of the outcome rather than the joint action of two factors.

Correct answer: A longitudinal design

Following one group of the same individuals from age 5 to 25 is a longitudinal design, the only arrangement that shows change within the same people over time. A cross-sectional design compares different age groups at a single time point. A cross-sequential design follows several cohorts starting at different ages, combining both approaches, whereas here there is one group. A time-lag design compares different cohorts at the same age in different years, so it never follows anyone forward.

Correct answer: Statistical significance does not guarantee practical or clinical significance

A one-tenth-point gap on a hundred-point scale shows that statistical significance does not guarantee practical or clinical significance: with a large enough trial, a difference far too small to matter to any patient can still yield a very small p value, which is why effect sizes are reported alongside it. Extremely small probabilities certainly indicate false or accidental positives is wrong, since a p of 0.001 makes chance an unlikely explanation rather than a likely one. Undersized comparison samples scarcely support limited or unstable conclusions misreads the scenario, because a tiny difference reaching significance points to a large sample. Highly significant outcomes reliably show substantial or meaningful magnitudes states the very error the example refutes.

Correct answer: A strong negative linear link, where one score rises as another falls

An r of -0.90 is a strong negative linear link, where one score rises as another falls: the sign gives direction and the distance from zero gives strength. A strong inverse causal link overreaches, because a correlation cannot show that screen time worsens sleep rather than poor sleepers reaching for phones. A 90 percent shared variance confuses r with r squared, which here is about 81 percent. A weak inverse linear trend misreads the minus sign as weakness, when strength depends only on magnitude.

Correct answer: Social desirability bias

Reporting far more recycling than the waste data support is social desirability bias, the pull to present oneself favourably, which inflates approved behaviours on an evaluated topic. Acquiescence response bias is a tendency to agree with any statement regardless of content, not a pull toward the flattering answer specifically. Extreme response bias is a habit of choosing scale endpoints in either direction. Demand characteristics are cues about the study's hypothesis that participants try to satisfy, not a general wish to look good.

Correct answer: Strong internal validity

Treating groups identically except for the manipulation rules out confounds, which is what strong internal validity means: the independent variable, not a rival factor, caused the difference. Strong construct validity concerns whether the manipulation and measures represent the intended concepts. Strong external validity concerns generalizing to other people and settings. Strong conclusion validity concerns whether the statistical inference about the relationship is sound.

Correct answer: Cronbach's alpha statistic

The single number wanted here is Cronbach's alpha statistic, which estimates internal consistency by asking how strongly the twenty items covary within one sitting, and which is the standard summary reported for a scale intended to tap one trait. Spearman's rho correlation ranks two sets of scores and describes the association between two variables, so it answers a question about relationships rather than about item cohesion. Fleiss's kappa coefficient measures agreement among several raters judging the same material, and a self-report scale involves no raters. A Bonferroni corrected value adjusts a significance threshold when many tests are run, which has nothing to do with how tightly items hang together.

Correct answer: Demand characteristics

Participants who infer the hypothesis and then perform to it are showing demand characteristics: cues in the setting reveal what is expected, and behavior shifts to match the guess rather than the manipulation. Statistical regression is the drift of extreme scores back toward the average on a second testing, which happens without anyone guessing anything. Differential attrition is the unequal loss of participants from the conditions, a change in who remains rather than a change in how people act. Placebo susceptibility is a response to believing one has received an active treatment, which requires no inference about the researcher's aims and can occur while participants remain wholly unaware of the hypothesis.

Correct answer: A pooled meta-analysis

Combining effect sizes from forty studies into one overall estimate is a pooled meta-analysis, which weights and averages the numerical results of independent studies to give a more precise and more generalizable figure than any single study can. A narrative discussion also surveys a literature, but it summarizes conclusions in prose without pooling the numbers, which is exactly the step described. A covariance structure is fitted to variables within one dataset to test a model of how they relate, not across separate published studies. A multisite experiment collects fresh data at several locations under one protocol, so it generates results rather than synthesizing results that already exist.

Correct answer: A clear ceiling effect

Scores bunching at the top of an easy quiz is a clear ceiling effect: the measure runs out of room above the best performers, so genuine differences among them are compressed into the same near-maximum score. A sinking floor effect is the mirror problem, where a task is too hard and scores pile up at the bottom, which is not what happens on an easy quiz. A training gain effect is improvement produced by repeated testing, and the students here have sat the quiz once. A missing cases effect changes which people remain in a sample, whereas everyone sat this quiz and the trouble lies in the range of the scale itself.

Correct answer: A quasi-experimental design

Comparing people who already smoke with people who do not is a quasi-experimental design: there are distinct conditions and a measured outcome, but membership was determined by the participants' own histories rather than by the researcher, so smokers and nonsmokers may differ systematically in diet, income, or other habits. An uncontrolled observation would simply record behavior without forming comparison groups at all, and here two groups are explicitly contrasted. A matched-sample experiment still requires the investigator to place people into conditions after matching them, which is precisely what cannot be done with smoking. A pre-registered comparison describes when the analysis plan was filed, which says nothing about how groups arose.

Correct answer: The ordered median

For a positively skewed income distribution the best summary of the typical case is the ordered median, the middle value once the incomes are ranked, because it depends on the position of scores rather than their size and so is untouched by a handful of very high earners. The estimated mean adds every income into one total, so the few enormous figures drag it upward and it lands above what most people actually earn. The reported range is built entirely from the two most extreme incomes and describes spread rather than a typical value. The standard error indicates how much a sample estimate would vary from sample to sample, which is a matter of precision rather than of central tendency.