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100+ Free IB Psychology SL Practice Questions

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The amygdala is most strongly linked to processing which type of emotion?

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2026 Statistics

Key Facts: IB Psychology SL Exam

50%

Paper 1 weighting (approaches)

IB Psychology subject guide

25%

Internal Assessment weighting

IB Psychology subject guide

150 hours

Recommended teaching time at SL

IB Psychology SL guide

100

Free practice questions here

OpenExamPrep

IB Psychology SL is assessed by Paper 1 (3 SAQs + 1 essay across biological, cognitive and sociocultural approaches, 2 hours, 50%), Paper 2 (1 essay from a chosen option, 1 hour, 25%) and an Internal Assessment replication of a published study (25%). Students must support every approach with named studies, research methods and ethical considerations.

Sample IB Psychology SL Practice Questions

Try these sample questions to test your IB Psychology SL exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which brain area is most associated with speech production, where damage causes non-fluent, effortful speech?
A.Broca's area
B.Wernicke's area
C.Motor cortex
D.Hippocampus
Explanation: Broca's area, in the left frontal lobe, is responsible for speech production. Damage causes Broca's (expressive) aphasia, where comprehension remains largely intact but speech is non-fluent and laboured.
2The famous patient HM, studied by Milner (1957), had which structure removed bilaterally to treat epilepsy?
A.Hippocampus
B.Amygdala
C.Cerebellum
D.Frontal lobe
Explanation: HM underwent a bilateral medial temporal lobectomy that removed his hippocampus. Although his STM and procedural memory remained intact, he could no longer form new long-term declarative memories — strong evidence for the hippocampus's role in memory consolidation.
3Maguire et al. (2000) used MRI to show that London taxi drivers had a larger ______ compared with controls.
A.Posterior hippocampus
B.Anterior hippocampus
C.Amygdala
D.Prefrontal cortex
Explanation: Maguire found that the posterior hippocampus, associated with spatial navigation, was larger in licensed London taxi drivers, while the anterior hippocampus was smaller. Volume correlated with time as a driver, supporting neuroplasticity.
4Which of the following best illustrates neuroplasticity?
A.Dendritic branching increases after enriched experience
B.Action potentials follow the all-or-none law
C.The blood-brain barrier blocks large molecules
D.Myelin insulates the axon for faster conduction
Explanation: Neuroplasticity refers to the brain's ability to change its structure or function in response to experience — dendritic branching, synaptic pruning and cortical re-mapping are classic examples (Draganski 2004 jugglers).
5Which neurotransmitter is most strongly implicated in reward, motivation and the action of stimulant drugs?
A.Dopamine
B.Serotonin
C.GABA
D.Acetylcholine
Explanation: Dopamine in the mesolimbic pathway underlies reward processing and motivation. Stimulants such as cocaine and amphetamines increase synaptic dopamine, producing the characteristic euphoria and reinforcing effects.
6Which hormone, released by the adrenal cortex, is most associated with the body's chronic stress response?
A.Cortisol
B.Adrenaline
C.Oxytocin
D.Testosterone
Explanation: Cortisol is a glucocorticoid released by the adrenal cortex in response to ongoing stress, regulated by the HPA axis. Chronic elevation is linked to hippocampal shrinkage and impaired memory.
7Oxytocin is most associated with which behaviour?
A.Pair-bonding and trust
B.Aggression and dominance
C.Wakefulness and alertness
D.Inhibitory neural firing
Explanation: Oxytocin, released by the posterior pituitary, promotes pair-bonding, trust and maternal behaviour. Kosfeld et al. (2005) found intranasal oxytocin increased trusting behaviour in an investment game.
8Which technique uses radioactive tracers to map metabolic activity in the brain?
A.PET
B.MRI
C.CT
D.EEG
Explanation: Positron Emission Tomography (PET) injects a radioactive tracer (often FDG) and detects positron emission to map glucose uptake — useful for showing which areas are metabolically active during a task.
9fMRI measures brain activity by detecting changes in:
A.Blood-oxygen-level-dependent (BOLD) signal
B.Electrical scalp potentials
C.Glucose tracer uptake
D.X-ray attenuation
Explanation: Functional MRI (fMRI) uses the BOLD signal, exploiting the different magnetic properties of oxygenated and deoxygenated haemoglobin, to infer which areas are more active during a task.
10Which type of neuron carries impulses from sensory receptors towards the central nervous system?
A.Sensory (afferent) neurons
B.Motor (efferent) neurons
C.Relay (interneurons)
D.Glial cells
Explanation: Sensory (afferent) neurons transmit signals from peripheral receptors to the spinal cord and brain. Motor neurons carry signals out to effectors; relay neurons connect the two within the CNS.

About the IB Psychology SL Exam

IB Diploma Psychology Standard Level is a Group 3 (Individuals and Societies) course that studies behaviour through three core approaches — biological, cognitive and sociocultural — together with research methods, ethics, and one chosen option (Abnormal, Developmental, Health, or Human Relationships psychology). Assessment combines Paper 1 (short-answer questions plus one essay across the three approaches), Paper 2 (one essay on the chosen option) and an Internal Assessment replication study.

Questions

100 scored questions

Time Limit

Paper 1: 2 hours, Paper 2: 1 hour, plus Internal Assessment

Passing Score

Grade 4 commonly used as a pass; grades 1-7 awarded (7 highest)

Exam Fee

School-set entry fee (varies by school and country) (International Baccalaureate Organization (IBO))

IB Psychology SL Exam Content Outline

~25%

Biological approach to behaviour

Localisation of brain function (motor cortex, somatosensory cortex, Broca's area for speech production, Wernicke's area for comprehension, hippocampus for memory consolidation, amygdala for fear); HM case study (Milner 1957), Maguire 2000 London taxi drivers, Draganski 2004 neuroplasticity; neurons (sensory, motor, relay), synaptic transmission, neurotransmitters (acetylcholine, dopamine, serotonin, GABA); hormones (cortisol, adrenaline, oxytocin, testosterone); genetics, twin and adoption studies; evolutionary explanations; animal research ethics; brain imaging (CT, MRI, fMRI, PET)

~25%

Cognitive approach to behaviour

Multi-Store Model (Atkinson & Shiffrin 1968: sensory, STM 7+/-2 chunks for 18 seconds, unlimited LTM), Working Memory Model (Baddeley & Hitch 1974 with central executive, phonological loop, visuospatial sketchpad, episodic buffer added 2000); LTM types (episodic, semantic, procedural); schema theory (Bartlett 1932 War of the Ghosts); reconstructive memory and eyewitness testimony (Loftus & Palmer 1974 leading questions, Loftus 1979 weapon focus, Geiselman cognitive interview); dual processing theory (Kahneman System 1 vs System 2); cognitive biases (confirmation, anchoring, availability, representativeness); emotion and cognition (Brown & Kulik 1977 flashbulb memory)

~25%

Sociocultural approach to behaviour

Social Identity Theory (Tajfel 1979: social categorisation, identification, comparison; minimal group paradigm); conformity (Asch 1951 line task, normative vs informational influence); obedience (Milgram 1963 65% to 450V, agentic state, legitimate authority); bystander effect (Latane & Darley 1968 diffusion of responsibility); social learning theory (Bandura 1961 Bobo doll, vicarious reinforcement); Hofstede cultural dimensions (individualism vs collectivism, power distance, masculinity vs femininity); culture and behaviour (Berry 1967); acculturation and enculturation; stereotypes (formation, confirmation bias, self-fulfilling prophecy, stereotype threat — Steele & Aronson 1995)

~25%

Research methods, ethics and one option

Experimental designs (true, quasi, natural, lab vs field, IV/DV/EV/CV/confounding), correlational studies, case studies, observation (naturalistic vs structured, covert vs overt, participant vs non-participant), interviews and questionnaires, quantitative vs qualitative data, sampling (random, opportunity, volunteer, snowball, stratified, systematic, quota), reliability (test-retest, inter-rater), validity (internal, external, construct, ecological), triangulation, BPS-style ethics (informed consent, deception, debriefing, right to withdraw, protection from harm, confidentiality), animal ethics. One option in depth — e.g. Abnormal Psychology: definitions of abnormality (statistical infrequency, deviation from social norms, failure to function adequately, deviation from ideal mental health), DSM-5-TR vs ICD-11, depression (Beck negative triad), anxiety, OCD, treatments (SSRIs, CBT, mindfulness)

How to Pass the IB Psychology SL Exam

What You Need to Know

  • Passing score: Grade 4 commonly used as a pass; grades 1-7 awarded (7 highest)
  • Exam length: 100 questions
  • Time limit: Paper 1: 2 hours, Paper 2: 1 hour, plus Internal Assessment
  • Exam fee: School-set entry fee (varies by school and country)

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

IB Psychology SL Study Tips from Top Performers

1Memorise 2-3 named studies per topic with year, aim, method, findings and a critical evaluation point — every essay needs supporting research
2Use IB command terms exactly (outline, describe, explain, discuss, evaluate, contrast) — markschemes reward the level of detail demanded
3Practise SAQs (9 marks, ~20 minutes each) on past papers; structure: focus on command term, define key terms, describe one study, link back to the question
4Apply research-methods and ethics critique to every study you cite — examiners credit critical thinking far more than rote description

Frequently Asked Questions

How is IB Psychology SL assessed?

IB Psychology SL is assessed by Paper 1 (3 short-answer questions plus 1 essay across biological, cognitive and sociocultural approaches, 2 hours, 50% of the grade), Paper 2 (1 essay on a chosen option, 1 hour, 25%), and an Internal Assessment replication of a published experimental study (25%).

What are the three approaches in IB Psychology?

IB Psychology is built around three approaches to understanding behaviour: the biological approach (brain, neurotransmitters, hormones, genetics), the cognitive approach (memory models, schema, thinking and decision-making) and the sociocultural approach (social identity, conformity, obedience, cultural dimensions).

What is the difference between IB Psychology SL and HL?

HL covers everything in SL plus three HL extensions (one for each approach) and a second option for Paper 2, with longer papers and the addition of Paper 3 on qualitative research methods. SL is 150 teaching hours, HL is 240 hours.

Which option should I choose for Paper 2?

SL students study one of four options for Paper 2: Abnormal Psychology, Developmental Psychology, Health Psychology, or the Psychology of Human Relationships. Teachers usually pick the option as a class because it shapes lessons and the IA topic.