This free GRE Psychology study guide teaches to the — every content category ETS measures, organized the way the test is built.[1] The test is a broad survey of undergraduate psychology used in graduate admissions: about 144 multiple-choice questions over 170 minutes, reported as a 200–990 total plus six category subscores.[2]
Because the test samples the whole major, this guide is organized by the six official content categories: Biological, Cognitive, Social, Developmental, Clinical, and Measurement/Methodology/Other. It’s interactive, not a wall of text — every category has a built-in checkpoint quiz, hover-able glossary terms, comparison tables, labeled diagrams, and concept questions, so you learn by doing.
Read the guide category by category, test yourself at each checkpoint, then round out your free prep with our practice questions and flashcards.
GRE Psychology Exam Snapshot
| Detail | GRE Psychology Subject Test |
|---|---|
| Questions | About 144 multiple-choice questions (a few are unscored pretest items) |
| Format | Paper-delivered at a test center; single section, self-paced |
| Total time | 170 minutes (about 2 hours 50 minutes) |
| Score scale | 200–990 total in 10-point increments, plus six 0–100 subscores |
| Passing score | No fixed pass/fail — programs set their own expectations (many use percentiles) |
| Guessing penalty | None — answer every question |
| Content | Six categories: Biological, Cognitive, Social, Developmental, Clinical, Methods |
| Publisher | ETS (Educational Testing Service) |
There is no fixed pass/fail line — graduate programs set their own thresholds. Your raw correct answers become one scaled total plus a 0–100 subscore for each of the six content categories.
Your raw number of correct answers becomes one scaled total and six subscores — one per content category — so a balanced command of the whole major matters more than mastering any single area.[3] Spend your study time across all six categories, but weight it toward the two biggest:
ETS reports category shares as approximate percentages, so the exact mix shifts slightly each form.[1] This guide teaches all six categoriesin ETS’s order, as six study modules with their high-yield sub-topics broken out as checkable subsections.
1 · Biological
About 21% of the test — the single largest category. Biological psychology covers the nervous system and neurons, brain structures, sensation and perception, and the principles of learning and conditioning.[1] Get fluent here and you bank the most points.
Neurons & Neurotransmitters
A neuron carries a signal as an down its axon, then releases a across the to the next cell. insulates the axon and speeds the signal.
Signal flows dendrites → cell body → axon → terminals. Myelin speeds the signal; at the terminals, neurotransmitters cross the synapse to the next neuron.
| Neurotransmitter | Primary roles & links |
|---|---|
| Dopamine | Reward, motivation, movement; loss causes Parkinson's, excess linked to schizophrenia |
| Serotonin | Mood, sleep, appetite; low levels linked to depression |
| Acetylcholine | Memory and muscle activation; loss linked to Alzheimer's |
| GABA | The main inhibitory neurotransmitter; calms neural activity |
| Glutamate | The main excitatory neurotransmitter; learning and memory |
| Norepinephrine | Arousal, alertness, and the fight-or-flight stress response |
Brain Structures & Sensation
Know the workhorses: the hippocampus forms new memories, the amygdala handles fear and emotion, the cerebellum coordinates movement and balance, and the four lobes each have a job — the occipital lobe processes vision, the temporal lobe hearing, the parietal lobe touch and spatial sense, and the frontal lobe planning and movement.
| Structure | Function |
|---|---|
| Hippocampus | Forming new long-term memories |
| Amygdala | Fear, aggression, and emotional processing |
| Cerebellum | Coordinating voluntary movement and balance |
| Hypothalamus | Homeostasis — hunger, thirst, temperature, and the endocrine system |
| Occipital lobe | Processing visual information |
| Frontal lobe | Planning, judgment, voluntary movement, and personality |
In sensation, the retina’s rods handle dim-light and peripheral vision while cones handle color and detail. shows how expectation shapes perception.
Learning & Conditioning
The two great learning paradigms are (Pavlov — associating two stimuli) and (Skinner — shaping behavior by its consequences):
A neutral stimulus is paired with one that already triggers a reflex, until the neutral stimulus alone evokes the response. Learning is about associating two stimuli.
Bell + food → salivation, then bell alone → salivation. Pavlov.
Behavior is shaped by its consequences: reinforcement makes a behavior more likely, punishment less likely. Learning is about associating a behavior with an outcome.
Lever press → food pellet (reinforcer). Skinner, building on Thorndike’s law of effect.
Classical conditioning pairs a stimulus with a reflex; operant conditioning pairs a voluntary behavior with a consequence.
Checkpoint · Category 1 · Biological
Question 1 of 10
Which neurotransmitter is primarily involved in the regulation of mood, appetite, and sleep?
2 · Cognitive
About 20% of the test. Cognitive psychology covers memory, attention, thinking and problem-solving, decision-making heuristics, language, and intelligence — how the mind takes in, stores, and uses information.[1]
Memory & Attention
The classic model moves information from sensory memory to (about seven items, ~15–30 seconds) to long-term memory through rehearsal and deep encoding. In Baddeley’s model, the central executive directs attention while the phonological loop and visuospatial sketchpad hold verbal and visual information. expands effective short-term capacity.
| Term | What to remember |
|---|---|
| Sensory memory | Brief, large-capacity store of raw sensory input (iconic, echoic) |
| Short-term / working memory | ~7 items for ~15–30 sec; where active processing happens |
| Long-term memory | Durable, effectively unlimited; explicit (facts/events) vs implicit (skills) |
| Serial position effect | Better recall of first (primacy) and last (recency) items in a list |
| Zeigarnik effect | Incomplete tasks are remembered better than completed ones |
Thinking, Problem-Solving & Heuristics
A is a mental shortcut that is usually fast but can bias judgment. The judges likelihood by how easily examples come to mind; the representativeness heuristic judges by similarity to a prototype. Functional fixedness and confirmation bias are other high-yield traps.
| Bias | What it is |
|---|---|
| Availability heuristic | Judging frequency by how easily examples come to mind |
| Anchoring bias | Relying too heavily on the first piece of information offered |
| Confirmation bias | Favoring information that confirms existing beliefs |
| Functional fixedness | Seeing an object only in its usual use |
| Framing effect | Decisions swayed by how options are worded (gain vs loss) |
Language & Intelligence
In language, Chomsky’s universal grammarproposes an innate capacity for language shared across humans. In intelligence, know Spearman’s general factor (g), Gardner’s multiple intelligences, and Sternberg’s triarchic theory, plus the difference between fluid intelligence (reasoning with novel problems) and crystallized intelligence (accumulated knowledge).
Checkpoint · Category 2 · Cognitive
Question 1 of 10
Which of the following best describes the concept of "chunking" in cognitive psychology?
3 · Social
About 13% of the test. Social psychology studies how people think about, influence, and relate to one another — attribution, attitudes and persuasion, conformity and obedience, group behavior, and prejudice.[1]
Attribution & Attitudes
Attribution is how we explain behavior. The is over-attributing others’ behavior to disposition over situation. (Festinger) is the discomfort of holding conflicting beliefs, which drives attitude change.
| Concept | What it is |
|---|---|
| Fundamental attribution error | Overweighting disposition, underweighting situation, for others |
| Self-serving bias | Crediting success to self, blaming failures on the situation |
| Cognitive dissonance | Discomfort from conflicting beliefs that motivates attitude change |
| Social comparison | Evaluating ourselves against others, especially similar others |
| In-group bias | Favoring the group one identifies with over out-groups |
Conformity, Obedience & Groups
Landmark studies anchor this category: Asch on , Milgram on obedience to authority, Zimbardo’s Stanford prison study on roles, and Latané & Darley on the . Groupthinkis when a group’s desire for harmony overrides realistic appraisal of alternatives.
Checkpoint · Category 3 · Social
Question 1 of 10
What is the primary focus of the "Cognitive Dissonance Theory" proposed by Leon Festinger?
4 · Developmental
About 13% of the test. Developmental psychology traces change across the lifespan — cognitive development, attachment, moral development, and the nature-vs-nurture question.[1]
Cognitive Development (Piaget & Vygotsky)
Piaget’s four stages are the most tested topic in this category. Each is invariant and sequential, with a signature achievement — in the sensorimotor stage and in the concrete operational stage:
- Sensorimotor (birth–2)Learns through senses and movement; develops object permanence — that things exist when out of sight.
- Preoperational (2–7)Symbolic thinking and language; egocentric, and lacks conservation (quantity stays the same despite shape).
- Concrete operational (7–11)Logical thought about concrete events; masters conservation, reversibility, and classification.
- Formal operational (11+)Abstract and hypothetical reasoning; can think about possibilities, not just the here and now.
The stages are invariant and sequential — every child passes through them in the same order, though not at the same age.
Vygotsky offered a contrasting sociocultural view: learning is driven by social interaction within the , with scaffolding from a more knowledgeable other.
Attachment & Moral Development
research includes Harlow’s monkeys (comfort contact over food) and Ainsworth’s Strange Situation (secure, avoidant, and anxious-ambivalent styles). For moral development, Kohlberg proposed preconventional, conventional, and postconventional levels, while Gilligan argued his model underweighted an ethic of care.
| Theorist | Contribution |
|---|---|
| Jean Piaget | Four stages of cognitive development; object permanence, conservation |
| Lev Vygotsky | Sociocultural theory; zone of proximal development, scaffolding |
| Erik Erikson | Eight psychosocial stages across the whole lifespan |
| Harry Harlow | Attachment and the role of comfort in bonding (monkey studies) |
| Lawrence Kohlberg | Stages of moral reasoning (preconventional → postconventional) |
Checkpoint · Category 4 · Developmental
Question 1 of 10
In developmental psychology, the term "critical period" is best defined as:
5 · Clinical
About 16% of the test. Clinical and abnormal psychology covers psychological disorders and their classification, the major therapies, and theories of personality and abnormality.[1]
Disorders & the DSM-5-TR
The is the standard classification of mental disorders, providing shared diagnostic criteria.[6] It describes and categorizes disorders rather than explaining their causes. Know the major categories — anxiety, mood, psychotic, personality, and somatic-symptom disorders — and signature terms like conversion disorder (loss of sensory or motor function with no medical cause) and splitting (linked to borderline personality disorder).
Therapies & Treatment
(Beck, Ellis) changes distorted thoughts and behaviors and is strongly supported for depression and anxiety. treats phobias. Other high-yield approaches:
| Therapy | Core idea & figure |
|---|---|
| Psychoanalytic / psychodynamic | Surface unconscious conflict; transference (Freud) |
| Cognitive behavioral (CBT) | Change distorted thoughts and behaviors (Beck, Ellis) |
| Behavioral | Change behavior via conditioning; systematic desensitization for phobias |
| Humanistic / client-centered | Unconditional positive regard and growth (Rogers) |
| Dialectical behavior therapy (DBT) | Emotion regulation and interpersonal effectiveness (Linehan) |
Personality Theories
Span the major schools: Freud’s psychoanalytic structure (id, ego, superego); the humanistic view of Maslow and Rogers; and the trait approach, anchored by the Big Five (openness, conscientiousness, extraversion, agreeableness, neuroticism — “OCEAN”).
Checkpoint · Category 5 · Clinical
Question 1 of 10
What is the primary focus of Dialectical Behavior Therapy (DBT)?
6 · Measurement, Methodology & Other
About 17% of the test. This category covers research design, measurement (reliability and validity), statistics, and the history of psychology and its major figures.[1]These are fast, learnable points because the rules are finite.
Research Designs & Validity
Only a controlled experiment with random assignment can establish causation — correlational designs show relationships but cannot rule out a . A double-blind procedure keeps both participants and researchers unaware of group assignment to control bias.
| Property | What it means |
|---|---|
| Reliability | Consistency of a measure (test-retest, inter-rater, internal consistency) |
| Validity | Whether a test measures what it claims (construct, content, criterion) |
| Test-retest reliability | Same scores across two administrations to the same people |
| Construct validity | The test measures the theoretical trait it intends to |
| External validity | Findings generalize to other settings, people, and times |
Statistics & Significance
Know the measures of center and spread — mean, median, mode, and — and the difference between a (false positive) and a (false negative). The right inferential test depends on the design:
History & Major Figures
founded the first psychology laboratory in 1879. Know the schools and their founders: structuralism (Titchener), functionalism (James), behaviorism (Watson, Skinner), psychoanalysis (Freud), humanism (Maslow, Rogers), and the cognitive revolution.
Checkpoint · Category 6 · Measurement & Methodology
Question 1 of 10
In the context of psychological testing, what does the term "test-retest reliability" refer to?
How to Use This Study Guide
A study guide is a map, not the whole territory — use it alongside the official ETS GRE Psychology Test Practice Book and our free tools.[4] Because the test samples the entire major, the goal is broad, balanced coverage of all six categories rather than depth in any one. Spaced, mixed practice beats one long cram, and reviewing every miss is where the real learning happens.
Biological and Cognitive together are roughly 40% of the test — they reward the most study. ETS reports approximate percentages, so the exact mix shifts a little each form.
- 1
Read a category here
Work through one content category at a time — biological, then cognitive, social, developmental, clinical, and methods.
- 2
Take the checkpoint
The quick check at the end of each category exposes what didn't stick.
- 3
Drill the gaps
Send your weak category straight into the free practice questions and flashcards.
- 4
Take full, timed practice
Sit the official ETS practice test to build stamina, then review every miss before test day.
GRE Psychology Concept Questions
Common psychology concepts the GRE Psychology test actually measures — at least one per content category. Tap any card for a short, exam-ready answer backed by an authoritative source, then test yourself on them as flashcards.
GRE Psychology Glossary
Quick definitions for the terms you’ll see most across the GRE Psychology Subject Test:
- Action potential
- The brief electrical impulse that travels down an axon when a neuron fires, following the all-or-none principle.
- Attachment
- The enduring emotional bond between a child and caregiver. Harlow's monkey studies and Ainsworth's Strange Situation are landmark research.
- Availability heuristic
- Judging how likely or frequent an event is by how easily examples come to mind, which can overweight vivid or recent instances.
- Bystander effect
- The finding that the more people present during an emergency, the less likely any one person is to help, due to diffusion of responsibility.
- Chunking
- Grouping individual items into larger, meaningful units to expand the effective capacity of short-term memory.
- Classical conditioning
- Learning in which a neutral stimulus, paired repeatedly with a stimulus that triggers a reflex, comes to evoke that response on its own (Pavlov).
- Cognitive behavioral therapy
- A structured, present-focused therapy that changes distorted thoughts and maladaptive behaviors; strongly supported for depression and anxiety (Beck, Ellis).
- Cognitive dissonance
- The psychological discomfort of holding contradictory beliefs or acting against a belief, which motivates a change in attitude or behavior (Festinger).
- Conformity
- Adjusting one's behavior or beliefs to match a group standard, demonstrated in Asch's line-judgment experiments.
- Confounding variable
- An extraneous variable that changes systematically with the independent variable, offering an alternative explanation for the results.
- Conservation
- The understanding that quantity stays the same despite changes in shape or arrangement; mastered in Piaget's concrete operational stage.
- DSM-5-TR
- The Diagnostic and Statistical Manual of Mental Disorders, fifth edition, text revision — the American Psychiatric Association's standard classification of mental disorders and their criteria.
- Fundamental attribution error
- The tendency to overestimate dispositional causes and underestimate situational ones when explaining other people's behavior.
- GRE Psychology Subject Test
- A standardized, paper-delivered test from ETS used in graduate psychology admissions. It has about 144 multiple-choice questions over 170 minutes, drawn from six content categories, and is reported as a 200–990 total plus six subscores.
- Heuristic
- A mental shortcut that speeds judgment and decision-making but can lead to systematic errors (biases), such as the availability and representativeness heuristics.
- Myelin
- The fatty sheath wrapped around many axons that insulates them and speeds the conduction of nerve impulses.
- Neurotransmitter
- A chemical messenger released at a synapse that carries a signal from one neuron to the next. Examples include dopamine, serotonin, acetylcholine, GABA, and glutamate.
- Object permanence
- The understanding that objects continue to exist even when out of sight; it develops during Piaget's sensorimotor stage.
- Operant conditioning
- Learning in which behavior is shaped by its consequences — reinforcement strengthens it, punishment weakens it (Skinner, after Thorndike's law of effect).
- Punishment
- Any consequence that decreases the likelihood of a behavior. Positive punishment adds an aversive stimulus; negative punishment removes a desirable one.
- Reinforcement
- Any consequence that increases the likelihood of a behavior. Positive reinforcement adds a reward; negative reinforcement removes an aversive stimulus.
- Reliability
- The consistency of a measurement — whether it yields the same result on repeated use (test-retest, inter-rater, internal consistency).
- Standard deviation
- A measure of how spread out data are around the mean. A larger standard deviation means more variability.
- Standardization (Wundt)
- Wilhelm Wundt founded the first psychology laboratory in 1879 in Leipzig, marking psychology's emergence as an experimental science.
- Synapse
- The junction between two neurons where a neurotransmitter crosses from the axon terminal of one to the dendrite of the next.
- Systematic desensitization
- A behavioral therapy that pairs deep relaxation with a gradual hierarchy of feared situations to reduce phobic anxiety.
- Top-down processing
- Perception guided by prior knowledge, context, and expectations, rather than by the raw sensory data alone (which is bottom-up processing).
- Type I error
- A false positive — rejecting a true null hypothesis, concluding there is an effect when there is none. Its probability is alpha.
- Type II error
- A false negative — failing to reject a false null hypothesis, missing a real effect. Its probability is beta; power = 1 − beta.
- Validity
- The degree to which a test measures what it claims to measure (construct, content, and criterion validity).
- Working memory
- The limited-capacity system that holds and manipulates information for a short time. In Baddeley's model it has a central executive, phonological loop, and visuospatial sketchpad.
- Zone of proximal development
- Vygotsky's term for the gap between what a learner can do alone and what they can do with guidance, where learning is most effective.
Free GRE Psychology Study Materials & Resources
Everything you need to prepare for the GRE Psychology Subject Test is free here — no paywall, no sign-up. This guide is the foundation; pair it with the rest of our free GRE Psychology study materials for active recall, timed practice, and last-minute review:
- GRE Psychology Practice Test — exam-style questions across all six content categories, with explanations.
- GRE Psychology Flashcards — active-recall decks for the high-yield theorists, theories, and terms.
GRE Psychology Study Guide FAQ
The GRE Psychology Subject Test contains about 144 multiple-choice questions. The exact count can vary slightly by form. Questions are drawn from six content categories — biological, cognitive, social, developmental, clinical, and measurement/methodology — and a small number are unscored pretest items.
The test takes 170 minutes (about 2 hours and 50 minutes) of testing time. It is delivered on paper at a test center, and there is no separate timing per content category — you manage your own pace across all the questions.
You receive one total scaled score from 200 to 990, reported in 10-point increments, based on the number of questions you answer correctly (there is no penalty for wrong answers). You also receive six subscores, each from 0 to 100, showing your percent correct in each content category.
No. There is no universal pass/fail line. Each graduate program sets its own expectations, and many look at your percentile rank rather than the raw score. Check the target programs you are applying to for any stated minimums or averages.
ETS groups questions into six content categories: Biological (including sensation, perception, and learning), Cognitive, Social, Developmental, Clinical, and Measurement/Methodology/Other (including the history of psychology). Biological and Cognitive together make up roughly 40% of the test.
Yes. Your score is based only on the number of correct answers, with no deduction for wrong ones, so you should answer every question even if you have to guess. Never leave a question blank.
Work through the six content categories module by module — biological, cognitive, social, developmental, clinical, then methods. After each module take the checkpoint quiz to find gaps, drill those topics with our free practice questions and flashcards, and revisit flagged sections before test day.
Yes — the full guide, the checkpoints, the glossary, the concept questions, the practice questions, and the flashcards are 100% free, with no account required.
References
- 1.ETS. “GRE Psychology Test Content — Subject Tests.” ETS. ↑
- 2.ETS. “About the GRE Subject Tests.” ETS. ↑
- 3.ETS. “GRE Subject Tests — Scores.” ETS. ↑
- 4.ETS. “GRE Psychology Test Practice Book.” ETS. ↑
- 5.American Psychological Association. “APA Dictionary of Psychology.” American Psychological Association. ↑
- 6.American Psychiatric Association. “Diagnostic and Statistical Manual of Mental Disorders (DSM-5-TR).” American Psychiatric Association. ↑
Sources for the concept answers
Every answer in the GRE Psychology concept questions above is drawn from an official or authoritative primary source:
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