AP Psychology Quick Review

Modern psychology is not one theory but a set of contemporary perspectives --- biological, cognitive, behavioral, humanistic, psychodynamic, evolutionary, and social-cultural --- that each ask a different question about the same behavior, unified today under the biopsychosocial model.

Wilhelm Wundt opened the first psychology lab (Leipzig, 1879) and is considered the father of psychology. Structuralism (Titchener, introspection: what are the elements of the mind?) vs.\ functionalism (William James, influenced by Darwin: why does the mind work this way?). The biopsychosocial model --- integrating biological, psychological, and social-cultural levels of analysis --- is the dominant lens on the modern exam.

Structuralism (breaks the mind into its basic elements) vs.\ functionalism (asks what adaptive purpose a mental process serves).

Students default to ``psychoanalytic'' as the explanation for every scenario because it's the most familiar name; the exam rewards identifying the perspective that fits the SPECIFIC evidence given (a question about neurotransmitters is biological, not psychodynamic).

Wundt 1879 Leipzig $arrow$ structuralism (parts) vs.\ functionalism (purpose) $arrow$ biopsychosocial = the modern default lens.

Only a true experiment with random assignment can establish cause and effect; every other method --- correlational, case study, naturalistic observation, survey --- can only describe or predict a relationship.

Independent variable (manipulated) vs.\ dependent variable (measured); operational definitions turn abstract concepts into measurable variables. Random assignment controls for confounding variables and is what allows causal claims; random sampling affects generalizability, not causality. A confounding variable is an uncontrolled variable that varies systematically with the IV. Placebo effects and experimenter bias are controlled with single-blind/double-blind procedures.

Random SAMPLING (who gets chosen to be in the study --- affects generalizability) vs.\ random ASSIGNMENT (who gets put in which group --- affects internal validity/causality).

On the AAQ, students see a correlational study and still write ``this proves X causes Y''; any design without random assignment (correlational or quasi-experimental) can only support an association, never a causal claim, no matter how strong the correlation.

Manipulate IV $arrow$ random ASSIGNMENT $arrow$ causation; random SAMPLING $arrow$ generalization only.

Descriptive statistics summarize a data set (central tendency, variability), while statistical significance tells you whether a result is likely due to chance rather than a real effect.

Mean (average, pulled by outliers), median (middle score, resistant to outliers/skew), mode (most frequent score); standard deviation measures spread around the mean. A correlation coefficient ranges from $-1$ to $+1$ --- sign shows direction, absolute value shows strength. Statistical significance is conventionally set at $p<.05$: less than a 5% probability the result occurred by chance.

A strong correlation (coefficient near $±1$) vs.\ a statistically significant result ($p<.05$) --- a weak correlation can still be significant with a large sample, and significance never implies causation.

On data-interpretation MCQs, students reverse the skew rule: in a distribution skewed by high outliers, the mean is pulled HIGHER than the median, not the reverse.

Mean = outlier-sensitive; median = outlier-resistant; $r$ near $±1$ = strong; $p<.05$ = ``probably not chance.''

Ethical research protects participants' welfare while still allowing valuable science to be conducted, balancing scientific value against risk of harm.

Institutional Review Boards (IRBs) approve research with human participants. Required elements: informed consent, confidentiality/anonymity, protection from harm, the right to withdraw at any time, and debriefing (full disclosure of the study's true purpose afterward, required especially when deception was used). Animal research requires justified scientific purpose and humane treatment. APA ethical guidelines govern all of this.

Confidentiality (identity is known but kept private) vs.\ anonymity (no identifying information is collected at all).

Students think deception is always unethical; deception is permitted when scientifically justified, minimal, and followed by debriefing --- the exam tests that debriefing is the required safeguard, not that deception itself is banned.

IRB approves $arrow$ informed consent $arrow$ (deception only if justified) $arrow$ debrief.

Good scientific thinking requires actively resisting the mental shortcuts that make research findings feel more obvious, certain, or confirmatory than they actually are.

Hindsight bias (``I knew it all along'') makes findings seem predictable after the fact. Confirmation bias is the tendency to seek and favor information that supports existing beliefs while ignoring disconfirming evidence. Overconfidence is overestimating the accuracy of one's own judgments. Peer review is the process by which other experts evaluate a study before publication to catch these errors.

Hindsight bias (distorts judgment about the PAST, after the outcome is known) vs.\ confirmation bias (distorts what evidence you SEEK OUT going forward).

On the EBQ, students dismiss a source that contradicts their claim instead of addressing it; full-credit arguments acknowledge and engage with conflicting evidence rather than cherry-picking only supporting sources.

Hindsight = ``knew it all along'' (past); confirmation bias = seeks supporting evidence (future); peer review = the check on both.

Virtually every psychological trait is the product of gene--environment interaction, not nature OR nurture alone.

Twin studies compare monozygotic (identical, $≈$100% shared genes) vs.\ dizygotic (fraternal, $≈$50% shared genes) twins to estimate heritability. Adoption studies separate genetic from environmental influence by comparing adopted children to both biological and adoptive relatives. Heritability is a population statistic --- the proportion of VARIATION in a trait attributable to genes within a specific group --- not an individual statistic. Epigenetics: environmental factors can switch genes on/off without changing the DNA sequence.

Heritability (variation across a POPULATION explained by genes) vs.\ an individual's traits being ``genetic'' --- heritability says nothing about the cause of any one person's trait.

Students say a trait with 50% heritability means ``50% caused by genes'' in that person; heritability is a population-level statistic about variation, not a split within one individual.

MZ (100% genes) vs.\ DZ (50%) twins $arrow$ heritability = % of population VARIATION explained by genes.

The nervous system is organized hierarchically so the brain and spinal cord (central) can process information gathered and delivered by nerves throughout the body (peripheral).

CNS = brain + spinal cord; PNS = everything else, split into the somatic nervous system (voluntary, skeletal muscle) and the autonomic nervous system (involuntary, internal organs). The autonomic system splits into sympathetic (arousing, ``fight-or-flight'') and parasympathetic (calming, ``rest-and-digest'') divisions. The spinal cord also governs simple reflex arcs without direct brain involvement.

Sympathetic (arouses, speeds heart rate, dilates pupils) vs.\ parasympathetic (calms, slows heart rate) --- both are always active to some degree, not an on/off switch.

Students assume a stress scenario is only sympathetic; the exam often tests parasympathetic rebound (calming down afterward) as an equally testable concept.

CNS = brain+cord; PNS = somatic (voluntary) + autonomic (involuntary) $arrow$ sympathetic (go) vs.\ parasympathetic (rest).

Neurons communicate through an all-or-none electrical signal within the cell and a chemical signal (neurotransmitter release) across the synaptic gap to the next cell.

Dendrites receive signals, the soma integrates them, the axon (often myelinated for speed) conducts the action potential, and terminal buttons release neurotransmitters into the synapse. Resting potential is roughly $-70$mV. Depolarization triggers an action potential only once threshold is reached (all-or-none law --- intensity is coded by firing RATE, not signal size). Key neurotransmitters: acetylcholine (muscle movement, memory --- undersupply linked to Alzheimer's), dopamine (reward, movement --- oversupply linked to schizophrenia, undersupply to Parkinson's), serotonin (mood, sleep, hunger --- undersupply linked to depression), norepinephrine (arousal), GABA (major inhibitory transmitter), glutamate (major excitatory transmitter), endorphins (natural pain relief). Agonists mimic/enhance a neurotransmitter's effect; antagonists block it. Reuptake is the sending neuron's reabsorption of excess neurotransmitter.

Agonist (increases/mimics a neurotransmitter's action) vs.\ antagonist (blocks/decreases it) --- e.g., an SSRI blocks serotonin reuptake, acting as a serotonin agonist overall.

Students think a stronger stimulus produces a bigger action potential; action potentials are all-or-none (same size every time) --- a stronger stimulus increases firing FREQUENCY, not amplitude.

Dendrite $arrow$ soma $arrow$ axon $arrow$ terminal button $arrow$ synapse; $-70$mV resting, all-or-none, rate not size.

Different brain structures specialize in different functions, and researchers use distinct tools to study structure vs.\ real-time function.

Hindbrain: medulla (heartbeat, breathing), cerebellum (balance, motor coordination, procedural memory). Limbic system: hippocampus (forming new explicit memories), amygdala (fear/aggression), hypothalamus (drives: hunger, thirst, temperature). Cortex lobes: frontal (executive function, decision-making; contains Broca's area for speech production), parietal (touch, spatial processing), temporal (hearing; contains Wernicke's area for language comprehension), occipital (vision). Split-brain research (Sperry, Gazzaniga) --- severing the corpus callosum --- revealed hemispheric specialization (left = language/logic dominant in most people, right = spatial/holistic). Techniques: EEG (electrical activity, high time resolution), fMRI/PET (functional --- show activity in real time), CT/MRI (structural anatomy only, no activity).

Broca's area (frontal lobe --- speech PRODUCTION; damage causes halting, effortful speech) vs.\ Wernicke's area (temporal lobe --- language COMPREHENSION; damage causes fluent but meaningless speech).

Students mix up structural vs.\ functional scans; a question about which brain areas are MOST ACTIVE during a task always points to a functional technique (fMRI/PET/EEG), never a CT or structural MRI alone.

Frontal=executive/Broca's; Temporal=hearing/Wernicke's; hippocampus=new memories; amygdala=fear; fMRI/PET=function, CT/MRI=structure.

Sleep cycles through distinct, biologically distinguishable stages roughly every 90 minutes across the night, each serving different restorative and memory functions.

Circadian rhythm is regulated by the suprachiasmatic nucleus. NREM-1 (light sleep), NREM-2 (sleep spindles, largest share of sleep), NREM-3 (slow-wave/deep sleep, growth hormone release, hardest to wake, more prevalent early in the night); REM sleep (vivid dreaming, muscle atonia/paralysis, brain activity resembles wakefulness) increases in duration across the night. Disorders: insomnia (difficulty falling/staying asleep), narcolepsy (sudden, uncontrollable REM attacks), sleep apnea (repeated breathing interruption during sleep), night terrors (NREM-3, no recall, unlike REM nightmares). Dream theories: Freud's wish-fulfillment (manifest vs.\ latent content), activation-synthesis (dreams = the brain interpreting random neural activity), information-processing (dreams help consolidate the day's memories).

Night terrors (NREM-3, early night, no memory of the event, common in children) vs.\ nightmares (REM sleep, later in the night, often remembered vividly).

Students assume dreaming only happens in REM; the exam expects REM specifically as the stage of VIVID, story-like, well-remembered dreaming paired with muscle atonia.

NREM 1-2-3 (light to deep, growth hormone) $arrow$ REM (atonia, vivid dreams); 90-min cycle; SCN drives circadian rhythm.

Sensation is the process of detecting physical stimuli, and psychophysics defines precise, testable rules for how much stimulus change is needed to be noticed.

Absolute threshold = minimum stimulus intensity detectable 50% of the time; difference threshold (JND) = minimum detectable difference between two stimuli. Weber's law: the JND is a constant PROPORTION of the original stimulus. Sensory adaptation = diminished sensitivity to an UNCHANGING stimulus over time. Transduction = converting physical energy into neural signals. Vision: rods (low light, black/white, peripheral) vs.\ cones (color, detail, central); trichromatic theory (three cone types) explains color detection at the retina, opponent-process theory (red-green, blue-yellow, black-white pairs) explains afterimages and color processing downstream. Audition: place theory (pitch = WHERE the basilar membrane vibrates, best for high pitches) vs.\ frequency theory (pitch = RATE of neural firing, best for low pitches).

Absolute threshold (can you detect it AT ALL) vs.\ difference threshold/JND (can you detect a CHANGE) --- and trichromatic theory (retina-level) vs.\ opponent-process theory (later, downstream neural level).

Students think trichromatic and opponent-process theories contradict each other; the exam tests that BOTH are correct, operating at different stages of visual processing.

Absolute threshold=detect at all; JND/Weber's law=proportional change; trichromatic (retina) + opponent-process (afterimages) both true.

Perception is the active organization and interpretation of sensory information, shaped as much by top-down expectations as by bottom-up sensory data.

Bottom-up processing (building perception from individual sensory details) vs.\ top-down processing (using context/expectations to interpret data). Gestalt principles: figure-ground, proximity, similarity, closure, continuity. Perceptual constancy = perceiving objects as unchanging (size, shape, color) despite a changing raw sensory image. Depth cues: binocular (retinal disparity, convergence) vs.\ monocular (relative size, interposition, linear perspective, texture gradient). Perceptual set = a mental predisposition to perceive one thing and not another based on expectations, context, or emotion.

Sensation (raw detection of stimuli by sensory receptors) vs.\ perception (the brain's organization and interpretation of that raw data into meaning).

Students describe an illusion (e.g., M\"uller-Lyer) as purely a ``sensation'' problem; illusions occur because perceptual organizing principles (like depth cues) are misapplied --- a PERCEPTION-level, top-down phenomenon.

Bottom-up (data $arrow$ meaning) vs.\ top-down (expectation $arrow$ meaning); Gestalt = figure-ground/proximity/similarity/closure.

Humans rely on efficient but error-prone mental shortcuts (heuristics) rather than exhaustive logical procedures (algorithms) to solve problems and make judgments quickly.

Algorithm = a step-by-step procedure guaranteeing a correct solution (slow but reliable); heuristic = a mental shortcut (fast but error-prone). Kahneman & Tversky's key heuristics: representativeness heuristic (judging likelihood by similarity to a prototype, ignoring base rates) and availability heuristic (judging likelihood by how easily examples come to mind). Fixation: mental set (persisting with a previously successful strategy) and functional fixedness (failing to see a novel use for a familiar object). Framing effects: how a choice is worded (gains vs.\ losses) changes decisions. Insight = a sudden, non-strategy-based realization of a solution.

Representativeness heuristic (judging by similarity to a typical case/prototype) vs.\ availability heuristic (judging by how easily/vividly examples come to mind, e.g., overestimating plane-crash risk after news coverage).

Students default to ``availability heuristic'' for every quick, wrong judgment; if the error is about matching a description to a stereotype while ignoring base rates, it is representativeness, not availability.

Algorithm=guaranteed but slow; heuristic=fast but biased; availability=ease of recall; representativeness=similarity to prototype.

The Atkinson--Shiffrin model proposes memory moves through three distinct stores --- sensory, short-term/working, and long-term --- each with different capacity and duration.

Sensory memory holds a brief, near-exact image/echo of a stimulus (iconic = visual, split-second; echoic = auditory, a few seconds). Short-term memory (STM) holds about 7 ($±2$) chunks for roughly 20--30 seconds without rehearsal (Miller's ``magic number seven''). Working memory (Baddeley's updated model) is an active-processing view of STM with sub-components: the phonological loop (verbal/auditory info), the visuospatial sketchpad (visual/spatial info), and the central executive (coordinates attention). Long-term memory (LTM) has vast, relatively permanent capacity. Chunking and rehearsal move information from STM into LTM.

Short-term memory (older, simpler idea --- a passive box holding limited info briefly) vs.\ working memory (Baddeley's active system that manipulates information via named sub-components).

Students treat ``short-term memory'' and ``working memory'' as fully interchangeable; the exam rewards knowing working memory is the more precise, active-processing successor concept.

Sensory (iconic/echoic) $arrow$ STM/working memory ($7±2$, $≈$20--30 sec) $arrow$ LTM (vast, lasting).

How deeply and meaningfully information is processed at encoding strongly predicts how well it will be remembered later.

Automatic processing occurs effortlessly for well-practiced info (space, time, frequency); effortful processing requires conscious attention/rehearsal. Levels-of-processing (Craik & Lockhart): shallow/structural encoding (appearance) and phonemic encoding (sound) produce weaker memory than deep/semantic encoding (meaning). Mnemonics, chunking, and the self-reference effect improve encoding via semantic elaboration. The spacing effect: distributed practice over time beats massed practice (cramming). The serial position effect: better recall for items at the beginning (primacy effect, moved to LTM) and end (recency effect, still in STM) of a list.

Primacy effect (early items remembered because they had time to rehearse into LTM) vs.\ recency effect (last items remembered because they're still active in STM) --- a delay before recall wipes out recency but not primacy.

Students think shallow/structural encoding is just as effective as semantic encoding as long as you ``pay attention''; the exam consistently rewards meaning-based (semantic) processing as the deepest, most durable encoding.

Shallow (look) $<$ phonemic (sound) $<$ semantic (meaning) encoding; spacing beats massed practice; primacy=LTM, recency=STM.

Long-term memory is not one unified system --- different types of memories are stored via different neural mechanisms and can be selectively damaged.

Explicit/declarative memory (conscious) splits into semantic memory (general facts) and episodic memory (personal experiences); implicit/nondeclarative memory (unconscious) includes procedural memory (skills/habits) and conditioned associations. The hippocampus is critical for forming NEW explicit memories, but is not the storage site for old memories, which are distributed across the cortex. Long-term potentiation (LTP) --- increased synaptic firing efficiency with repeated stimulation --- is the leading neural basis of memory storage. The cerebellum is involved in storing implicit/procedural memories.

Semantic memory (facts --- ``Paris is the capital of France'') vs.\ episodic memory (personal events --- ``my trip to Paris last summer'') --- both explicit, but one is general knowledge, the other autobiographical.

Students think hippocampal damage erases all memory; classic amnesia cases show damage there prevents forming NEW explicit memories (anterograde amnesia) while old memories and new procedural learning remain largely intact.

Explicit (semantic=facts, episodic=events) vs.\ implicit (procedural=skills); hippocampus=new explicit memory formation; LTP=biological basis of storage.

Retrieval success depends heavily on matching the cues present at recall to the cues that were present at encoding.

Recall (retrieving info with no cues) vs.\ recognition (identifying info among options) --- recognition is generally easier. The encoding specificity principle: retrieval is best when cues match the encoding context. State-dependent memory (matching internal/mood state) and context-dependent memory (matching external environment) both improve retrieval. Priming = unconscious activation of associations that influences retrieval of related information. Tip-of-the-tongue phenomenon reflects a retrieval failure despite the memory being stored.

Context-dependent memory (matching the external PLACE) vs.\ state-dependent memory (matching the internal MOOD/physiological state, e.g., mood-congruent memory).

Students treat recall and recognition as testing the same memory strength; a person can fail to recall unprompted yet correctly recognize the same fact among choices --- recognition is a more sensitive measure.

Recall (no cues) $<$ recognition (cued) in difficulty; encoding specificity $arrow$ match cues at retrieval to encoding.

Forgetting is not simply memory ``decay'' over time --- it results from multiple distinct mechanisms, and memory itself is a reconstructive, sometimes error-prone process rather than a perfect recording.

Ebbinghaus's forgetting curve shows memory loss is steep initially, then levels off. Encoding failure (never entered LTM) vs.\ storage decay (trace fades) vs.\ retrieval failure (stored but inaccessible). Proactive interference (OLD learning disrupts NEW recall) vs.\ retroactive interference (NEW learning disrupts OLD recall). Loftus's misinformation effect: post-event misleading information can distort a memory during recall, demonstrating reconstruction. Source amnesia = remembering information but misattributing its source, contributing to false memories.

Proactive interference (old $arrow$ blocks new; pushes FORWARD) vs.\ retroactive interference (new $arrow$ blocks old; reaches BACKWARD).

Students assume confident eyewitnesses are accurate ones; Loftus's research shows confidence and accuracy are NOT reliably correlated, and leading questions can implant false details into memory.

Proactive=old blocks new (forward); retroactive=new blocks old (backward); Loftus $arrow$ misinformation effect $arrow$ memory is reconstructive.

Psychologists disagree over whether intelligence is one general ability or many independent abilities, and intelligence testing raises persistent questions about validity, reliability, and bias.

Spearman's g factor = a single, general intelligence underlying performance across tasks. Gardner's multiple intelligences (linguistic, logical-mathematical, spatial, bodily-kinesthetic, musical, interpersonal, intrapersonal, naturalist) rejects a single g. Sternberg's triarchic theory: analytical, creative, and practical intelligence. Binet developed the first intelligence test (mental age); Terman adapted it into the Stanford-Binet. Modern tests use deviation IQ scores normed to mean 100, SD 15. Wechsler tests (WAIS/WISC) yield verbal and performance subscores. Reliability (consistency of results) vs.\ validity (does the test measure what it claims?). Stereotype threat (Steele): anxiety about confirming a negative stereotype can itself impair test performance.

Reliability (a test gives CONSISTENT results across administrations) vs.\ validity (a test actually MEASURES what it claims to) --- a test can be reliable without being valid, but not valid without being reliable.

Students think a high test-retest correlation proves a test is an accurate measure of intelligence; that only establishes reliability --- validity (that the score means what it claims) must be established separately.

g factor (Spearman) vs.\ multiple intelligences (Gardner) vs.\ triarchic (Sternberg); reliable=consistent, valid=measures the right thing; mean 100, SD 15.

Developmental psychologists study how nature and nurture interact continuously across the lifespan, using research designs specifically built to track change over time.

Longitudinal design (same participants studied repeatedly over time --- tracks true individual change, but slow and subject to attrition) vs.\ cross-sectional design (different age groups compared at one time point --- fast, but confounds age with cohort/generational effects). Cross-sequential design combines both. Continuity vs.\ stages debate: gradual, continuous change or distinct qualitative stages. Stability vs.\ change debate: whether traits remain consistent or change substantially across life.

Longitudinal (same people, over time, true developmental change but slow) vs.\ cross-sectional (different ages, one time point, fast but cohort-confounded).

Students assume cross-sectional studies measure ``development'' directly; age-group differences found cross-sectionally could reflect cohort effects rather than true developmental change --- only longitudinal designs isolate the two.

Longitudinal = same people over time (no cohort confound); cross-sectional = different ages at once (cohort confound).

Physical development follows a predictable biological sequence prenatally and in infancy, while environmental exposures during sensitive prenatal periods can permanently disrupt that sequence.

Prenatal stages: germinal (conception to implantation), embryonic (weeks 3--8, organ formation), fetal (week 9 to birth). Teratogens = external agents (e.g., alcohol, drugs, viruses) that can harm prenatal development --- fetal alcohol syndrome is the key example. Infant reflexes (rooting, sucking, grasping, Moro/startle) are present at birth. Maturation = biologically-programmed growth relatively independent of experience, seen in the fixed sequence of motor development (sitting before crawling before walking). Aging brings declines in fluid intelligence and sensory acuity while crystallized intelligence (accumulated knowledge/vocabulary) tends to hold steady or increase.

Fluid intelligence (novel, on-the-spot reasoning --- tends to decline with age) vs.\ crystallized intelligence (accumulated knowledge/vocabulary --- tends to remain stable or increase with age).

Students think all cognitive abilities decline uniformly with age; the exam expects the differentiated pattern --- fluid intelligence declines while crystallized intelligence is often preserved.

Germinal $arrow$ embryonic (organs) $arrow$ fetal; teratogens=external harm (alcohol=FAS); fluid intelligence declines, crystallized holds/rises.

Gender is shaped by an interaction of biological, cognitive, and social-cultural influences, and is conceptually distinct from biological sex and from sexual orientation.

Sex = biological category (chromosomes, anatomy); gender = the psychological and social/cultural meanings, roles, and identity attached to being male, female, or other gender identities. Gender identity = one's personal sense of gender; gender roles = culturally prescribed expectations. Gender schema theory: children develop cognitive frameworks for what's ``appropriate'' for their gender and use them to guide behavior. Sexual orientation = an enduring pattern of attraction (heterosexual, homosexual, bisexual, etc.); research indicates orientation is not a conscious choice and has biological correlates.

Gender identity (internal, psychological sense of self) vs.\ sexual orientation (pattern of attraction to others) --- conceptually independent constructs.

Students conflate sex, gender, and sexual orientation into a single variable in scenario questions; the exam expects each treated as a distinct, definable construct.

Sex=biological; gender=psychosocial role/identity; orientation=pattern of attraction --- three distinct constructs.

Piaget viewed cognitive development as children actively constructing understanding through a fixed sequence of qualitatively different stages, while Vygotsky emphasized the essential role of social and cultural interaction in driving that development.

Piaget's stages: sensorimotor (birth--2, object permanence develops), preoperational (2--7, symbolic thought, egocentrism, lacks conservation), concrete operational (7--11, conservation and logical thought about concrete objects), formal operational (12+, abstract/hypothetical reasoning). Schemas, assimilation (fitting new info into existing schemas) and accommodation (changing schemas to fit new info) drive cognitive growth. Vygotsky's zone of proximal development (ZPD) = the gap between what a child can do alone vs.\ with guided assistance; scaffolding = temporary support from a more knowledgeable other within the ZPD.

Assimilation (fitting NEW info into an EXISTING schema, e.g., calling a horse a ``doggie'') vs.\ accommodation (CHANGING a schema to fit new info, e.g., learning ``horse'' is a different category).

Students say a preoperational child lacks object permanence; object permanence is a SENSORIMOTOR-stage achievement --- preoperational's hallmark limitation is failed conservation and egocentrism.

Sensorimotor (object permanence) $arrow$ preoperational (egocentrism, no conservation) $arrow$ concrete operational (conservation) $arrow$ formal operational (abstract); Vygotsky: ZPD + scaffolding.

Language develops in a universal biological sequence, but theorists disagree on whether that sequence is driven mainly by innate biological programming or by learning/reinforcement from the environment.

Sequence: babbling ($≈$4 months) $arrow$ one-word/holophrastic stage ($≈$1 year) $arrow$ two-word/telegraphic stage ($≈$2 years, simple grammar, essential content words only) $arrow$ full sentences. Skinner: language is learned through operant conditioning (reinforcement, imitation). Chomsky: humans have an innate language acquisition device (LAD) and universal grammar, citing the speed/creativity of child language learning as evidence reinforcement alone cannot explain. Critical/sensitive period hypothesis: language is most easily acquired within a biologically limited early-childhood window; acquisition becomes markedly harder after puberty.

Skinner's learning-based account (reinforcement/imitation shape language) vs.\ Chomsky's nativist account (innate LAD/universal grammar drives language).

Students describe telegraphic speech as ``ungrammatical'' or ``random''; it follows a consistent, simplified grammatical structure (e.g., ``want cookie'') --- exactly the evidence Chomsky used to argue for an innate grammatical capacity.

Babbling $arrow$ one-word $arrow$ telegraphic (two-word) $arrow$ full sentences; Skinner=learned/reinforced; Chomsky=innate LAD/universal grammar.

Early attachment relationships and a lifelong sequence of social-psychological ``crises'' both shape development, according to two major but separate theoretical traditions.

Harlow's monkey studies showed attachment is driven by contact comfort (a soft cloth ``mother''), not just feeding. Ainsworth's Strange Situation identified attachment styles: secure attachment (distress at separation, comforted on reunion, uses caregiver as a secure base) vs.\ insecure-avoidant (little distress/avoids caregiver) and insecure-resistant/ambivalent (clingy, hard to soothe on reunion). Temperament = a child's innate, biologically-based emotional style, stable from birth. Erikson's psychosocial stages each center on a crisis to resolve across the lifespan: trust vs.\ mistrust (infancy), autonomy vs.\ shame and doubt (toddlerhood), initiative vs.\ guilt (early childhood), industry vs.\ inferiority (school age), identity vs.\ role confusion (adolescence), intimacy vs.\ isolation (young adulthood), generativity vs.\ stagnation (middle adulthood), integrity vs.\ despair (late adulthood).

Attachment theory (Ainsworth/Harlow --- the early caregiver--infant bond and its style) vs.\ Erikson's psychosocial stages (a broader lifelong sequence of identity crises spanning infancy through late adulthood).

Students think secure attachment means a child shows NO distress at separation; securely attached children DO show distress but are easily comforted --- the key marker is effective use of the caregiver as a secure base, not the absence of distress.

Harlow=contact comfort; Ainsworth=Strange Situation (secure vs.\ avoidant vs.\ resistant); Erikson=8 lifespan crises (trust vs.\ mistrust $arrow$ ... $arrow$ integrity vs.\ despair).

Classical conditioning is learning through association, in which a neutral stimulus comes to trigger a response originally caused only by another stimulus.

Pavlov's terms: unconditioned stimulus (UCS, naturally triggers a response), unconditioned response (UCR, reflexive), conditioned stimulus (CS, neutral stimulus paired with the UCS until it alone triggers a response), conditioned response (CR, learned response to the CS). Acquisition = initial learning of the CS--UCS association (works best when CS precedes UCS shortly). Extinction = the CR weakens when the CS is repeatedly presented without the UCS. Spontaneous recovery = reappearance of a weakened CR after a rest period. Stimulus generalization (responding to CS-similar stimuli) vs.\ stimulus discrimination (distinguishing the CS from similar stimuli). Watson & Rayner's ``Little Albert'' study classically conditioned a fear response in an infant.

Stimulus generalization (responding similarly to stimuli that RESEMBLE the CS) vs.\ stimulus discrimination (learning to respond ONLY to the specific CS).

Students think extinction erases the original association entirely; spontaneous recovery shows the association is suppressed, not erased, since the CR can reappear after a rest period without further pairings.

UCS$arrow$UCR (natural); CS+UCS (paired) $arrow$ CS$arrow$CR (learned); extinction (CR fades) $arrow$ spontaneous recovery (CR reappears).

Operant conditioning is learning through consequences --- behaviors followed by reinforcement increase in frequency, while behaviors followed by punishment decrease.

Positive reinforcement (ADDING a desirable stimulus to increase a behavior), negative reinforcement (REMOVING an aversive stimulus to increase a behavior), positive punishment (ADDING an aversive stimulus to decrease a behavior), negative punishment (REMOVING a desirable stimulus to decrease a behavior). Shaping = reinforcing successive approximations toward a target behavior. Reinforcement schedules: continuous (fast learning, fast extinction) vs.\ partial --- fixed-ratio (set number of responses, e.g., piecework), variable-ratio (unpredictable number, highest and most extinction-resistant response rate, e.g., gambling), fixed-interval (first response after a set time, scalloped pattern), variable-interval (first response after unpredictable time, slow steady responding). Primary reinforcers (innately satisfying) vs.\ secondary/conditioned reinforcers (learned value, e.g., money).

Negative reinforcement (REMOVING something aversive to INCREASE a behavior, e.g., taking aspirin to remove a headache) vs.\ punishment (DECREASING a behavior) --- negative reinforcement is never punishment.

Students label variable-ratio as ``the best'' schedule without reasoning why; the exam rewards knowing the unpredictability of reward timing is what keeps response rates high and extinction-resistant (the gambling example).

Reinforcement=increases behavior (positive=add, negative=remove); punishment=decreases behavior; variable-ratio=highest rate, most resistant to extinction.

Not all learning fits the classical/operant mold --- learning can occur through observation, insight, and cognitive maps, and biology constrains what associations an organism can readily learn.

Bandura's observational learning (social learning theory): the Bobo doll experiment showed children imitate modeled aggressive behavior, especially when the model is rewarded (vicarious reinforcement) rather than punished. Four processes required: attention, retention, reproduction, motivation. Tolman's latent learning: rats form cognitive maps of a maze even without reinforcement, with the learning apparent only once a reward is introduced (learning $≠$ performance). Garcia & Koelling's taste-aversion research demonstrated biological preparedness --- organisms are biologically predisposed to associate certain stimuli (e.g., taste with illness) more readily than others.

Latent learning (learning that occurs but isn't demonstrated until there's incentive to display it) vs.\ observational learning (learning by watching a model, with vicarious reinforcement/punishment influencing imitation).

Students think taste-aversion findings simply replicate standard classical conditioning; taste aversion can form after just ONE pairing with a LONG CS--UCS delay --- violating the usual rules about repeated pairings and short intervals, due to biological preparedness.

Bandura=observational (Bobo doll, attention/retention/reproduction/motivation); Tolman=latent learning (cognitive maps); Garcia=biological preparedness (taste aversion, one trial, long delay OK).

People routinely explain others' behavior by attributing it either to internal disposition or external situation, and a systematic bias skews these explanations toward blaming the person rather than the circumstances.

Dispositional attribution (internal traits/character) vs.\ situational attribution (external circumstances). The fundamental attribution error = overestimating dispositional causes and underestimating situational causes when explaining OTHERS' behavior. The self-serving bias = attributing one's OWN successes internally and failures externally.

Fundamental attribution error (overweighting disposition when judging OTHERS) vs.\ self-serving bias (attributing one's OWN successes internally, failures externally).

Students apply the fundamental attribution error to a person explaining their OWN behavior; FAE specifically concerns judgments about OTHER people --- self-judgments follow the self-serving bias pattern.

FAE = judging OTHERS $arrow$ overweight disposition; self-serving bias = judging SELF $arrow$ success=me, failure=situation.

Attitudes and behavior influence each other bidirectionally, and inconsistency between the two creates psychological discomfort that motivates people to change one or the other.

Attitudes have cognitive, affective, and behavioral components. Foot-in-the-door (small request first makes a larger later request more likely to be accepted) vs.\ door-in-the-face (unreasonably large request refused, then a smaller request is more likely accepted). Central route persuasion (thoughtful evaluation of arguments, durable change) vs.\ peripheral route persuasion (superficial cues like attractiveness, less durable change). Festinger's cognitive dissonance theory: discomfort from conflicting attitudes/behavior motivates people to change their attitude to restore consistency.

Central route persuasion (careful, logical evaluation of message content --- durable change) vs.\ peripheral route persuasion (superficial cues --- fragile, temporary change).

Students think attitudes always determine behavior; cognitive dissonance research shows behavior (especially when freely chosen with little external justification) can change attitudes to reduce dissonance.

Foot-in-door (small$arrow$big) vs.\ door-in-face (big refused$arrow$smaller accepted); dissonance $arrow$ attitude shifts to match behavior.

Classic social psychology experiments show ordinary people will conform to group judgments and obey authority figures even against their own perception or moral instincts, and being part of a group changes individual behavior in predictable ways.

Asch's line-judgment experiments demonstrated conformity to a unanimous group majority; conformity decreases if even one dissenter breaks unanimity. Milgram's obedience experiments showed a majority of participants would deliver what they believed were dangerous shocks when ordered by an authority figure, especially when the authority was close/legitimate and the victim wasn't directly visible. Zimbardo's Stanford Prison Experiment illustrated how assigned roles/power can rapidly produce cruel or submissive behavior (deindividuation). Social facilitation (better performance on simple/well-learned tasks with an audience) vs.\ social loafing (less individual effort on a group task, especially when contribution isn't identifiable). Groupthink = a group's desire for harmony overrides realistic appraisal of alternatives. Bystander effect (Darley & Latan\'e) = an individual is less likely to help when other bystanders are present, due to diffusion of responsibility.

Social facilitation (better performance on SIMPLE tasks with an audience) vs.\ social loafing (LESS individual effort on a GROUP task).

Students think Milgram's findings mean most people are simply cruel; obedience rates dropped sharply when the authority's legitimacy/proximity decreased or the victim's suffering became more visible --- obedience is highly situation-dependent.

Asch=conformity; Milgram=obedience; Zimbardo=roles/deindividuation; social loafing (less effort) vs.\ bystander effect (less helping, diffusion of responsibility).

Psychodynamic theory explains personality as the product of unconscious conflict, while humanistic theory explains it as the product of an innate drive toward self-fulfillment given a supportive environment.

Freud: id (unconscious, pleasure principle), ego (reality principle, mediates), superego (internalized morals). Defense mechanisms (unconscious): repression (blocking anxiety-provoking thoughts, the foundational defense), projection (attributing one's own feelings to others), displacement (redirecting an impulse to a safer target), reaction formation (expressing the opposite of a true impulse). Psychosexual stages (oral, anal, phallic, latency, genital) --- unresolved conflict causes fixation. Neo-Freudians: Jung (collective unconscious, archetypes), Adler (inferiority complex). Humanistic theory: Maslow's hierarchy of needs (physiological $arrow$ safety $arrow$ belongingness/love $arrow$ esteem $arrow$ self-actualization) --- lower needs must largely be met before higher ones motivate. Rogers's person-centered theory: unconditional positive regard, genuineness, and empathy foster a healthy self-concept and self-actualization.

Freud's psychosexual STAGES (fixed, childhood, sexual-conflict based) vs.\ Erikson's psychosocial STAGES (lifelong, social/identity-based crises extending into adulthood).

Students describe defense mechanisms as consciously chosen coping strategies; in Freud's theory they operate UNCONSCIOUSLY by definition.

Freud: id (pleasure)/ego (reality)/superego (morals); defense mechanisms=unconscious; Maslow=needs hierarchy (self-actualization on top); Rogers=unconditional positive regard.

Trait theories describe personality as a stable set of measurable dimensions, while the social-cognitive perspective explains personality as the product of continuous, reciprocal interaction between a person's thoughts, behavior, and environment.

The modern trait consensus is the Big Five/OCEAN model --- Openness, Conscientiousness, Extraversion, Agreeableness, Neuroticism --- each a continuous dimension, not a type. Bandura's social-cognitive theory centers on reciprocal determinism: behavior, personal/cognitive factors, and environment all mutually influence one another. Self-efficacy = belief in one's own competence to succeed at a task. Rotter's locus of control: internal (I control outcomes) vs.\ external (outside forces/luck control outcomes). Personality assessment: projective tests (ambiguous stimuli, e.g., Rorschach inkblot --- weaker reliability/validity) vs.\ objective self-report inventories (e.g., MMPI --- stronger reliability/validity).

Projective personality tests (ambiguous stimuli meant to reveal unconscious material, e.g., Rorschach --- lower reliability/validity) vs.\ objective inventories (structured questions, e.g., MMPI --- higher reliability/validity).

Students treat the Big Five as five separate ``types''; each is a CONTINUOUS dimension every person falls somewhere along, not a category.

OCEAN = continuous traits; Bandura=reciprocal determinism + self-efficacy; Rotter=locus of control; MMPI (objective) vs.\ Rorschach (projective).

Different motivation theories explain behavior through different mechanisms --- restoring internal balance, seeking optimal arousal, pursuing external rewards, or fulfilling a hierarchy of needs.

Drive-reduction theory: physiological needs create an aroused, uncomfortable drive that motivates behavior to restore homeostasis. Arousal theory / the Yerkes-Dodson law: performance is best at a MODERATE level of arousal, suffering at both very low and very high arousal (optimal arousal is lower for complex tasks). Incentive theory: behavior is pulled by external rewards, not just pushed by internal drives. Intrinsic motivation (internal satisfaction) vs.\ extrinsic motivation (external reward/avoiding punishment); the overjustification effect: adding excessive extrinsic rewards to an already intrinsically-motivated behavior can undermine intrinsic motivation.

Drive-reduction theory (motivation to REDUCE an unpleasant internal state toward homeostasis) vs.\ arousal theory (motivation to reach an OPTIMAL, moderate level of stimulation).

Students assume more arousal always improves performance; Yerkes-Dodson predicts an inverted-U --- a MODERATE level is optimal, and the ideal level shifts lower for complex tasks.

Drive-reduction=restore homeostasis; Yerkes-Dodson=inverted-U, moderate arousal best; intrinsic vs.\ extrinsic $arrow$ overjustification effect can kill intrinsic motivation.

Competing theories of emotion disagree about the sequence in which physiological arousal, cognitive appraisal, and the subjective feeling of emotion actually occur.

James-Lange theory: physiological arousal comes FIRST, and the subjective emotion follows from perceiving that arousal. Cannon-Bard theory: arousal and the subjective emotion occur SIMULTANEOUSLY and independently (both triggered at once by the thalamus). Schachter-Singer two-factor theory: emotion requires both physiological arousal AND a cognitive label/appraisal of that arousal based on context. Lazarus's cognitive-appraisal theory: some cognitive appraisal of a stimulus must occur before an emotional response. The facial feedback hypothesis: facial expressions can themselves influence the subjective experience of emotion.

James-Lange (arousal $arrow$ emotion, sequential) vs.\ Cannon-Bard (arousal and emotion simultaneous) vs.\ Schachter-Singer (arousal + cognitive LABEL together produce the specific emotion).

Students confuse Cannon-Bard's ``simultaneous'' claim with Schachter-Singer's ``two-factor'' claim; Cannon-Bard requires NO cognitive interpretation, while Schachter-Singer specifically requires a cognitive label to determine WHICH emotion is felt.

James-Lange: arousal$arrow$feeling; Cannon-Bard: arousal + feeling simultaneous; Schachter-Singer: arousal + cognitive label = specific emotion.

Stress is the body's response to demands appraised as taxing or exceeding one's resources, and the biopsychosocial model explains health outcomes as the product of biological, psychological, and social factors acting together.

Selye's General Adaptation Syndrome (GAS): alarm reaction (initial sympathetic arousal), resistance (body mobilizes resources to cope), exhaustion (prolonged stress depletes resources, increasing illness vulnerability). Lazarus's appraisal: primary appraisal (is this a threat/challenge?) and secondary appraisal (do I have resources to cope?). Problem-focused coping (directly addressing the stressor) vs.\ emotion-focused coping (managing one's emotional reaction). Chronic stress is linked to cardiovascular disease and suppressed immune function. The biopsychosocial model integrates biological, psychological, and social-cultural factors to explain illness and treatment.

Problem-focused coping (changing the SITUATION --- effective for controllable stressors) vs.\ emotion-focused coping (changing one's EMOTIONAL RESPONSE --- effective for uncontrollable stressors).

Students think the ``exhaustion'' stage of GAS just means stress continues; exhaustion specifically marks the point at which coping RESOURCES are depleted, leaving the person more vulnerable to illness.

GAS: alarm $arrow$ resistance $arrow$ exhaustion; problem-focused=change the stressor; emotion-focused=manage the reaction; biopsychosocial = bio+psych+social together.

Positive psychology, founded largely by Martin Seligman, shifted the field's focus from only treating dysfunction toward also studying what enables individuals and communities to flourish.

Subjective well-being = a person's own evaluation of their life satisfaction and happiness. Seligman's earlier research on learned helplessness (organisms exposed to uncontrollable negative events stop trying to escape even when escape becomes possible) motivated his later shift toward studying optimism and human strengths. Csikszentmihalyi's flow = complete absorption in an activity that is optimally challenging for one's skill level. Resilience = the capacity to adapt and recover functioning after adversity. Positive psychology also studies character strengths, gratitude, and post-traumatic growth.

Learned helplessness (a passive, giving-up response learned from PRIOR uncontrollable negative events) vs.\ resilience (the capacity to adapt and bounce back FOLLOWING adversity).

Students treat ``flow'' as simply ``enjoying an activity''; flow specifically requires an optimal challenge--skill balance (a task neither too easy nor too hard) --- the exam tests this specific balance condition.

Seligman: learned helplessness $arrow$ founded positive psychology; Csikszentmihalyi: flow = challenge matches skill; resilience = bouncing back after adversity.

How a society defines and explains ``abnormal'' behavior has shifted historically from supernatural and moral explanations toward a scientific, biopsychosocial model, formalized through standardized diagnostic classification.

A behavior is generally considered disordered when it is deviant (violates social norms), distressing (to the person or others), and dysfunctional (impairs daily functioning). The medical model treats disorders as diseases with identifiable symptoms and causes to be diagnosed/treated. The modern biopsychosocial model explains disorders as arising from an interaction of biological (genetics, brain chemistry), psychological (learned behaviors, thought patterns), and social-cultural (stress, family, culture-specific norms) factors. The DSM-5-TR (Diagnostic and Statistical Manual of Mental Disorders, 5th edition, Text Revision), published by the American Psychiatric Association, is the standard U.S.\ classification system for diagnosing disorders based on described symptom criteria.

The medical model (frames disorders as biologically-caused ``diseases'') vs.\ the biopsychosocial model (explains disorders as arising from an INTERACTION of biological, psychological, AND social-cultural factors).

Students assume the DSM-5-TR explains WHY a disorder occurs; the DSM-5-TR is a descriptive, symptom-based classification system --- it standardizes diagnostic criteria without asserting a specific theoretical cause.

Deviant + distressing + dysfunctional = disorder; medical model = disease/biology; biopsychosocial = bio+psych+social interacting; DSM-5-TR = describes symptoms, doesn't explain cause.

These are among the most common categories of psychological disorder, and each has a distinct symptom profile even though anxiety, low mood, and intrusive thoughts can overlap across categories.

Anxiety disorders: generalized anxiety disorder (GAD --- chronic, excessive, hard-to-control worry not tied to one specific trigger), specific phobia (persistent, excessive fear of a specific object/situation), panic disorder (recurrent, unexpected panic attacks). Obsessive-compulsive disorder (OCD, its own DSM-5-TR category, separate from anxiety disorders) = obsessions (intrusive, unwanted thoughts) paired with compulsions (repetitive behaviors performed to reduce the anxiety obsessions cause). Depressive disorders: major depressive disorder (MDD) requires persistent depressed mood and/or anhedonia plus other symptoms lasting at least 2 weeks with significant impairment. Bipolar disorders (their own separate DSM-5-TR category) involve manic/hypomanic episodes (elevated mood, energy, grandiosity, decreased need for sleep, risky behavior) that typically alternate with depressive episodes.

Major depressive disorder (persistent low mood/anhedonia, no manic episodes) vs.\ bipolar disorder (mood cycles between depressive AND manic/hypomanic episodes).

Students classify OCD as simply a type of anxiety disorder; in the DSM-5-TR, OCD is its own separate diagnostic category, distinct from anxiety disorders, even though anxiety is a core feature.

GAD=chronic diffuse worry; phobia=specific irrational fear; panic disorder=sudden attacks; OCD=obsessions+compulsions (own category); MDD=low mood $≥q$2 weeks; bipolar=depression + mania/hypomania.

Beyond mood and anxiety disorders, the DSM-5-TR recognizes several other major categories defined by disruptions to thought, identity, personality, eating, or development, each with distinct diagnostic markers.

Schizophrenia: positive symptoms (an excess/distortion of normal function --- hallucinations, delusions, disorganized speech/behavior) and negative symptoms (an absence of normal function --- flat affect, social withdrawal, avolition). The dopamine hypothesis proposes excess dopamine activity contributes to positive symptoms. Dissociative disorders involve disruption of consciousness/memory/identity (e.g., dissociative identity disorder). Personality disorders are enduring, inflexible, pervasive patterns deviating from cultural expectations (e.g., antisocial --- disregard for others' rights, no remorse; borderline --- unstable relationships/self-image/emotion, fear of abandonment). Eating disorders: anorexia nervosa (severe food restriction, fear of weight gain, distorted body image) and bulimia nervosa (binge eating followed by compensatory behaviors). Neurodevelopmental disorders: ADHD (persistent inattention and/or hyperactivity-impulsivity) and autism spectrum disorder (deficits in social communication plus restricted, repetitive behaviors).

Positive symptoms of schizophrenia (ADDED to normal experience --- hallucinations, delusions) vs.\ negative symptoms (SUBTRACTED from normal experience --- flat affect, avolition).

Students assume ``positive symptoms'' means the patient is doing well; here ``positive'' means symptoms ADDED to normal functioning --- the opposite of the everyday meaning.

Schizophrenia: positive=added (hallucinations/delusions), negative=absent (flat affect); dopamine hypothesis=excess dopamine; antisocial=no remorse; borderline=unstable self/relationships; anorexia=restrict, bulimia=binge-purge.

Modern treatment approaches derive directly from the major theoretical perspectives on personality/behavior, and are frequently combined for greater effectiveness than any single approach alone.

Psychodynamic/psychoanalytic therapy (Freud) uses free association and dream analysis to bring unconscious conflicts into awareness. Humanistic therapy (Rogers's client-centered therapy) provides unconditional positive regard, genuineness, and empathy. Behavioral therapies: systematic desensitization (pairing relaxation with a graduated hierarchy of feared stimuli, based on counterconditioning) and exposure therapy (direct, repeated exposure to a feared stimulus). Cognitive therapy (Beck) targets maladaptive/distorted thought patterns. Cognitive-behavioral therapy (CBT) combines cognitive restructuring with behavioral techniques, with strong empirical support especially for anxiety and depressive disorders. Biomedical treatments: psychopharmacology (e.g., SSRIs, antipsychotics, anti-anxiety medications) and, for severe treatment-resistant depression, electroconvulsive therapy (ECT). The eclectic approach combines techniques from multiple orientations.

Systematic desensitization (GRADUAL, hierarchy-based exposure paired with relaxation) vs.\ exposure therapy/flooding (direct, more rapid/intense exposure without a gradual hierarchy).

Students think medication alone or therapy alone is always ``the'' standard treatment; for many disorders (e.g., moderate-to-severe depression), combined treatment (psychotherapy plus medication) is more effective than either alone.

Psychodynamic=unconscious insight; humanistic=unconditional positive regard; behavioral=systematic desensitization/exposure; CBT=change thought patterns; biomedical=meds/ECT; often combined $>$ alone.

A short list of numbers and thresholds shows up repeatedly across MCQs and both FRQ types.

$-70$mV resting; $7±2$ chunks; 90-min sleep cycle; mean 100/SD 15 IQ; $p<.05$; 75 MCQ/90 min, 2 FRQ/70 min.

Precision vocabulary is the fastest, cheapest way to gain or lose points on both the MCQ and FRQ sections --- these pairs are the exam's favorite traps.

When two terms sound alike, ask: does it ADD or REMOVE (reinforcement/punishment)? Does it explain WHY or just describe (causation/correlation)?

The exam frequently tests matching a named researcher or study directly to the phenomenon it demonstrates --- memorize this list as pairs.

Match the name to the ONE-WORD phenomenon: Pavlov=association, Skinner=consequences, Bandura=imitation, Milgram=obedience, Asch=conformity.

AP Psychology has no case law or required texts, but the CED names specific competing theory families you must be able to identify and apply to unfamiliar scenarios.

Every ``competing theories'' cluster on the exam wants you to name BOTH sides and say what evidence distinguishes them.

The Article Analysis Question rewards a consistent, repeatable process for turning a summarized study into full-credit, research-methods-literate writing.

Question $arrow$ IV/DV $arrow$ design (causal or not) $arrow$ sample $arrow$ ethics $arrow$ interpret the stat $arrow$ connect to the claim.

Knowing the exact structure of the exam lets you pace and prioritize correctly on test day.

75 MCQ/90 min/66.7%; AAQ (10+15 min, 7 pts, 16.65%) + EBQ (15+30 min, 7 pts, 16.65%) = 70 min/33.3%.

Walking through neural transmission as a sequence (not just a memorized diagram) makes it easy to apply to any unfamiliar drug-effect or lesion scenario the exam gives you.

Resting ($-70$mV) $arrow$ threshold $arrow$ all-or-none firing $arrow$ neurotransmitter release $arrow$ receptor binding $arrow$ reuptake ends it.

When a graph, scatterplot, or statistic on the AAQ/EBQ feels unfamiliar under time pressure, use this quick-diagnosis checklist instead of panicking.

Tight cluster = strong $r$; sign = direction only; significance $≠$ size; no random assignment = no causal claim.

These statements sound intuitively true but are exactly the kind of overgeneralization the exam is designed to catch --- know why each is wrong.

Before you trust a statement on test day, ask: does this sneak in causation, a permanent change, or a ``good/bad'' label where none belongs?

75 MCQ + AAQ + EBQ, all five units, id/ego/superego to DSM-5-TR --- if you can explain WHY each pair above is distinct, you're ready.