IGCSE Psychology 0255 AI Tutor Playbook 2026

Audience: International British-curriculum Year 10-11 students (14-16 years old) preparing for the Summer 2027 IGCSE Psychology 0255 exam — the cohort targeting A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions. Covers international candidates in UK + International + UK-State-Schools + UK-Independent-Schools + UK-International-Schools + Singapore + Hong-Kong + UAE + India + Malaysia + Indonesia + Saudi + Egypt + Nigeria + South-Africa + Ghana + Kenya + Pakistan + Bangladesh + China + Japan + Korea + Australia + New-Zealand + Canada + Caribbean + Mexico + Brazil + Argentina + Chile + Colombia + Philippines + Thailand + Vietnam, IGCSE Psychology teachers who want an AI workflow for grading short-answer + extended-response + design + evaluation + application questions across the full 0255 syllabus in one workflow, parents paying for international British-curriculum tuition, homeschool families using IGCSE Psychology for transcript strength in Social-Science + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions.

Hook: Cambridge CAIE IGCSE Psychology 0255 had approximately 25,000+ candidates globally in 2025 — making it one of the dominant IGCSE Social-Science subjects globally. The grade distribution is competitive but achievable: A* rate of approximately 18.6 percent (one of the HIGHEST A*-rates among IGCSE Social-Science subjects — reflecting both the volume of psychology-track students and the depth of biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods mastery required at A*-tier), A rate of approximately 26.3 percent, B rate of approximately 28.5 percent, C rate of approximately 16.2 percent, with the cumulative A*-B rate (44.9 percent) being the IGCSE Psychology benchmark for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions readiness.

The Cambridge CAIE 0255 specification: Paper 1 (Biological-Approach + Brain + Neurobiology + Endocrine-System + Aggression + Biological-Treatment, 1 hour 30 minutes, 80 marks, 25%) tests brain-structure + brain-function + neurobiology + endocrine-system + aggression + biological-treatment at extended depth, Paper 2 (Cognitive-Approach + Memory + Perception + Language + Thought + Cognitive-Treatment, 1 hour 30 minutes, 80 marks, 25%) tests memory-processes + perception + language + thought + cognitive-treatment at extended depth, Paper 3 (Social-Approach + Social-Influence + Conformity + Obedience + Prejudice + Aggression + Prosocial-Behaviour, 1 hour 30 minutes, 80 marks, 25%) tests social-influence + conformity + obedience + prejudice + aggression + prosocial-behaviour at extended depth, Paper 4 (Developmental-Approach + Attachment + Memory-Development + Language-Development + Cognitive-Development + Social-Development, 1 hour 30 minutes, 80 marks, 25%) tests attachment + memory-development + language-development + cognitive-development + social-development at extended depth, Paper 5 (Individual-Differences + Personality + Intelligence + Abnormality + Therapy + Research-Methods + Experiment-Design + Observation + Correlation + Case-Study + Self-Report + Content-Analysis + Interviews + Questionnaire + Data-Analysis + Descriptive-Statistics + Inferential-Statistics + Significance-Testing + Ethical-Considerations, 1 hour 30 minutes, 80 marks, 25%) tests personality + intelligence + abnormality + therapy + research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations at extended depth. The balance: candidates aiming for A-Level + IB + university progression take the full Paper 1 Biological-Approach + Paper 2 Cognitive-Approach + Paper 3 Social-Approach + Paper 4 Developmental-Approach + Paper 5 Individual-Differences + Research-Methods with memory + perception + emotion + motivation + sleep-and-dreaming + personality + intelligence + abnormality + therapy + social-influence + conformity + obedience + prejudice + aggression + prosocial-behaviour + attachment + memory-processes + language + thought + brain + neurobiology + endocrine-system + research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations + applied-psychology + critical-evaluation + biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + memory-models + cognitive-processes + attachment-theory + abnormality-models + short-answer-construction + extended-response-construction + research-methods-evaluation + study-design-evaluation mastery at extended depth.

For international applicants (UK, International, EU, North America, Australia), the IGCSE Psychology 0255 A*-B grade is the gold-standard British-curriculum signal for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions globally.

Section 1 — Why IGCSE Psychology 0255 is one of the dominant IGCSE Social-Science subjects globally

IGCSE Psychology 0255 is one of the dominant IGCSE Social-Science + Psychology qualifications globally, with approximately 25,000+ candidates per summer exam session (2025 grade distribution: A* ~18.6%, A ~26.3%, B ~28.5%, C ~16.2%). It is taken by the international British-curriculum cohort — UK + UK-State-Schools + UK-Independent-Schools + UK-International-Schools + Singapore + Hong-Kong + UAE + Saudi-Arabia + Malaysia + Indonesia + India + Pakistan + Bangladesh + Sri-Lanka + Nepal + Egypt + Nigeria + South-Africa + Ghana + Kenya + Tanzania + Uganda + China + Japan + Korea + Australia + New-Zealand + Canada + Caribbean + Mexico + Brazil + Argentina + Chile + Colombia + Philippines + Thailand + Vietnam + Psychology-track-academic-cohort + Neuroscience-track-academic-cohort + Cognitive-Science-track-academic-cohort + PPE-track-academic-cohort + Psychiatry-track-academic-cohort + Clinical-Psychology-track-academic-cohort + Counselling-Psychology-track-academic-cohort + Educational-Psychology-track-academic-cohort + Occupational-Psychology-track-academic-cohort + Forensic-Psychology-track-academic-cohort + Sports-Psychology-track-academic-cohort + Russell-Group + Oxbridge-aspirants + A-Level-Psychology-track + IB-Psychology-track + AP-Psychology-track + Psychology-track + Neuroscience-track + Cognitive-Science-track + PPE-track — who want a rigorous IGCSE Psychology qualification covering the full 5 papers (Paper 1 Biological-Approach + Paper 2 Cognitive-Approach + Paper 3 Social-Approach + Paper 4 Developmental-Approach + Paper 5 Individual-Differences + Research-Methods) + memory + perception + emotion + motivation + sleep-and-dreaming + personality + intelligence + abnormality + therapy + social-influence + conformity + obedience + prejudice + aggression + prosocial-behaviour + attachment + memory-processes + language + thought + brain + neurobiology + endocrine-system + research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations + applied-psychology + critical-evaluation + biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + memory-models + cognitive-processes + attachment-theory + abnormality-models + short-answer-construction + extended-response-construction + research-methods-evaluation + study-design-evaluation.

The A*-rate of approximately 18.6 percent is one of the highest among IGCSE Social-Science subjects — reflecting both the volume of psychology-track students and the depth of biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods mastery required at A*-tier. The cumulative A*-B rate (44.9 percent) is the benchmark for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions readiness.

Section 2 — The 5 Papers (Paper 1 Biological-Approach + Paper 2 Cognitive-Approach + Paper 3 Social-Approach + Paper 4 Developmental-Approach + Paper 5 Individual-Differences + Research-Methods)

Paper 1: Biological-Approach + Brain + Neurobiology + Endocrine-System + Aggression + Biological-Treatment (1h 30m, 80 marks, 25%)

Tests brain-structure + brain-function + neurobiology + endocrine-system + aggression + biological-treatment-recognition + biological-treatment-understanding + brain-division-understanding + localization-of-function-understanding + neuron-structure-understanding + synaptic-transmission-understanding + neurotransmitter-understanding + fight-or-flight-understanding + serotonin-understanding + dopamine-understanding + testosterone-understanding + cortisol-understanding + brain-scans-understanding + brain-damage-cases-understanding + aggression-biological-explanation-understanding + biological-treatment-understanding + evaluation-understanding + comprehension + extended-response at extended depth. Question types include: short-answer questions on biological-approach + brain + neurobiology + endocrine-system + aggression (1-5 marks each, ~6-10 questions) + extended-response questions on biological-explanation + biological-treatment + biological-approach-comparison + biological-approach-evaluation (5-15 marks each, ~2-4 questions). Total: ~80 marks across ~10-14 questions.

Paper 2: Cognitive-Approach + Memory + Perception + Language + Thought + Cognitive-Treatment (1h 30m, 80 marks, 25%)

Tests memory-processes + perception + language + thought + cognitive-treatment-recognition + cognitive-treatment-understanding + multi-store-model-understanding + levels-of-processing-understanding + reconstructive-memory-understanding + eyewitness-testimony-understanding + cognitive-interview-understanding + schema-understanding + perception-organisation-understanding + perception-constancy-understanding + visual-illusion-understanding + language-structure-understanding + language-acquisition-understanding + thought-process-understanding + problem-solving-understanding + decision-making-understanding + cognitive-bias-understanding + heuristics-understanding + cognitive-treatment-understanding + evaluation-understanding + comprehension + extended-response at extended depth. Question types include: short-answer questions on cognitive-approach + memory + perception + language + thought (1-5 marks each, ~6-10 questions) + extended-response questions on cognitive-explanation + cognitive-treatment + cognitive-approach-comparison + cognitive-approach-evaluation (5-15 marks each, ~2-4 questions). Total: ~80 marks across ~10-14 questions.

Paper 3: Social-Approach + Social-Influence + Conformity + Obedience + Prejudice + Aggression + Prosocial-Behaviour (1h 30m, 80 marks, 25%)

Tests social-influence + conformity + obedience + prejudice + aggression + prosocial-behaviour-recognition + prosocial-behaviour-understanding + conformity-types-understanding + conformity-explanation-understanding + Asch-understanding + conformity-factors-understanding + obedience-explanation-understanding + Milgram-understanding + obedience-factors-understanding + prejudice-explanation-understanding + prejudice-types-understanding + prejudice-reduction-understanding + aggression-biological-explanation-understanding + aggression-social-explanation-understanding + aggression-psychological-explanation-understanding + aggression-reduction-understanding + prosocial-behaviour-explanation-understanding + bystander-effect-understanding + social-comparison-understanding + social-identity-understanding + evaluation-understanding + comprehension + extended-response at extended depth. Question types include: short-answer questions on social-approach + conformity + obedience + prejudice + aggression + prosocial-behaviour (1-5 marks each, ~6-10 questions) + extended-response questions on social-explanation + social-treatment + social-approach-comparison + social-approach-evaluation (5-15 marks each, ~2-4 questions). Total: ~80 marks across ~10-14 questions.

Paper 4: Developmental-Approach + Attachment + Memory-Development + Language-Development + Cognitive-Development + Social-Development (1h 30m, 80 marks, 25%)

Tests attachment + memory-development + language-development + cognitive-development + social-development-recognition + social-development-understanding + attachment-types-understanding + attachment-explanation-understanding + animal-studies-understanding + maternal-deprivation-understanding + institutionalisation-understanding + Bowlby-understanding + Ainsworth-understanding + cognitive-development-stages-understanding + Piaget-understanding + Vygotsky-understanding + language-development-stages-understanding + Chomsky-understanding + social-development-understanding + moral-development-understanding + Kohlberg-understanding + gender-development-understanding + evaluation-understanding + comprehension + extended-response at extended depth. Question types include: short-answer questions on developmental-approach + attachment + memory-development + language-development + cognitive-development + social-development (1-5 marks each, ~6-10 questions) + extended-response questions on developmental-explanation + developmental-treatment + developmental-approach-comparison + developmental-approach-evaluation (5-15 marks each, ~2-4 questions). Total: ~80 marks across ~10-14 questions.

Paper 5: Individual-Differences + Personality + Intelligence + Abnormality + Therapy + Research-Methods + Experiment-Design + Observation + Correlation + Case-Study + Self-Report + Content-Analysis + Interviews + Questionnaire + Data-Analysis + Descriptive-Statistics + Inferential-Statistics + Significance-Testing + Ethical-Considerations (1h 30m, 80 marks, 25%)

Tests personality + intelligence + abnormality + therapy + research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations-recognition + ethical-considerations-understanding + personality-types-understanding + personality-explanation-understanding + Eysenck-understanding + Cattell-understanding + intelligence-types-understanding + intelligence-explanation-understanding + IQ-testing-understanding + abnormality-definition-understanding + abnormality-models-understanding + abnormality-diagnosis-understanding + therapy-types-understanding + therapy-effectiveness-understanding + biological-therapy-understanding + cognitive-therapy-understanding + behavioural-therapy-understanding + psychodynamic-therapy-understanding + humanistic-therapy-understanding + experiment-design-understanding + observation-understanding + correlation-understanding + case-study-understanding + self-report-understanding + content-analysis-understanding + interviews-understanding + questionnaire-understanding + data-analysis-understanding + descriptive-statistics-understanding + inferential-statistics-understanding + significance-testing-understanding + ethical-considerations-understanding + evaluation-understanding + comprehension + extended-response at extended depth. Question types include: short-answer questions on individual-differences + personality + intelligence + abnormality + therapy + research-methods (1-5 marks each, ~6-10 questions) + extended-response questions on personality-explanation + intelligence-explanation + abnormality-explanation + therapy-effectiveness + research-methods-evaluation + experiment-design-evaluation (5-15 marks each, ~2-4 questions). Total: ~80 marks across ~10-14 questions.

Section 3 — The 5 Approaches + 20 Sub-Topics + 100+-Studies + 50+-Theories + 50+-Concepts + 30+-Ethical-Considerations + 30+-Statistical-Tests + 30+-Research-Methods + 100+-Terms

The IGCSE Psychology 0255 syllabus covers 5 approaches + 20 sub-topics with 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms:

1. Biological-Approach — brain-structure + brain-function + cerebral-cortex + frontal-lobe + parietal-lobe + temporal-lobe + occipital-lobe + cerebellum + brainstem + hippocampus + amygdala + hypothalamus + thalamus + corpus-callosum + neurons + synapse + neurotransmitters + acetylcholine + serotonin + dopamine + GABA + noradrenaline + endocrine-system + pituitary-gland + adrenal-gland + thyroid-gland + testosterone + oestrogen + cortisol + adrenaline + fight-or-flight + brain-scans + fMRI + EEG + CAT + PET + lesion-studies + brain-damage + biological-treatment + aggression + Raine + testosterone-and-aggression + serotonin-and-aggression + fight-or-flight-and-aggression.
2. Cognitive-Approach — memory + multi-store-model + sensory-memory + short-term-memory + long-term-memory + levels-of-processing + depth-of-processing + Craik-Lockhart + reconstructive-memory + Loftus + Bartlett + eyewitness-testimony + cognitive-interview + schema + perception + visual-organisation + Gestalt-principles + perception-constancy + visual-illusion + language + language-structure + language-acquisition + Chomsky + Skinner + thought + problem-solving + decision-making + cognitive-bias + heuristics + availability + representativeness + anchoring + cognitive-treatment.
3. Social-Approach — social-influence + conformity + Asch + conformity-types + informational-influence + normative-influence + internalisation + compliance + obedience + Milgram + obedience-factors + agentic-state + legitimacy-of-authority + prejudice + social-cognitive-theory + authoritarian-personality + right-wing-authoritarianism + social-dominance-orientation + discrimination + aggression + biological-explanation + social-explanation + psychological-explanation + SLT + social-learning + observational-learning + aggression-reduction + catharsis + prosocial-behaviour + bystander-effect + Darley-Latané + social-comparison + social-identity-theory.
4. Developmental-Approach — attachment + attachment-types + secure + insecure-avoidant + insecure-disorganised + Bowlby + monotropic-theory + maternal-deprivation + institutionalisation + Romanian-orphans + Ainsworth + strange-situation + animal-studies + Lorenz + imprinting + Harlow + cognitive-development + Piaget + sensorimotor + preoperational + concrete-operational + formal-operational + Vygotsky + language-development + Chomsky-LAD + Skinner + social-development + moral-development + Kohlberg + gender-development.
5. Individual-Differences + Research-Methods — personality + Eysenck + trait-theory + Cattell + 16PF + nomothetic + idiographic + intelligence + Spearman + g-factor + Gardner + multiple-intelligences + IQ-testing + mental-age + IQ + abnormality + deviation-from-norm + statistical-infrequency + failure-to-function + deviation-from-ideal + DSM + ICD + therapy + biological-therapy + cognitive-therapy + CBT + behavioural-therapy + psychodynamic-therapy + psychoanalysis + humanistic-therapy + Rogers + Maslow + research-methods + experiment + lab-experiment + field-experiment + natural-experiment + quasi-experiment + observation + covert + overt + participant + non-participant + correlation + positive + negative + zero + case-study + self-report + questionnaire + interviews + structured + unstructured + content-analysis + quantitative + qualitative + data-analysis + descriptive-statistics + mean + median + mode + IQR + range + standard-deviation + inferential-statistics + significance-testing + p-value + ethical-considerations + informed-consent + deception + protection-from-harm + right-to-withdraw + confidentiality + privacy + debriefing.
6. Memory — multi-store-model + sensory-register + STM + LTM + rehearsal + coding + capacity + duration + levels-of-processing + Craik-Lockhart + reconstructive-memory + Loftus + Bartlett + eyewitness-testimony + cognitive-interview + context-dependent + state-dependent + serial-position + interference + proactive + retroactive + memory-models + working-memory + Baddeley-Hitch + central-executive + phonological-loop + visuospatial-sketchpad + episodic-buffer.
7. Perception — visual-organisation + Gestalt-principles + proximity + similarity + closure + continuity + perception-constancy + size + shape + brightness + visual-illusion + Müller-Lyer + Ponzo + moon-illusion + depth-perception + monocular + binocular + cues + size-constancy + shape-constancy + brightness-constancy.
8. Emotion + Motivation + Sleep-and-Dreaming — emotion-theories + James-Lange + Cannon-Bard + Schachter-Singer + cognitive-appraisal + Lazarus + motivation-theories + drive-reduction + arousal + incentive + Maslow + hierarchy-of-needs + sleep-stages + REM + NREM + dreams + Freud + activation-synthesis + sleep-disorders + insomnia + narcolepsy + sleep-apnoea.
9. Personality + Intelligence — Eysenck + trait-theory + PEN + psychoticism + extraversion + neuroticism + Cattell + 16PF + surface-traits + source-traits + nomothetic + idiographic + Spearman + g-factor + s-factor + Gardner + multiple-intelligences + verbal-linguistic + logical-mathematical + spatial + bodily-kinesthetic + musical + interpersonal + intrapersonal + naturalistic + IQ-testing + mental-age + Stanford-Binet + Wechsler + culture-fair + IQ-distribution.
10. Abnormal-Psychology + Therapy — abnormality-definition + deviation-from-norm + statistical-infrequency + failure-to-function + deviation-from-ideal + DSM-5 + ICD-10 + mental-disorders + depression + anxiety + schizophrenia + OCD + PTSD + phobias + personality-disorders + therapy-types + biological-therapy + psychosurgery + ECT + cognitive-therapy + CBT + behavioural-therapy + systematic-desensitisation + aversion-therapy + token-economy + psychodynamic-therapy + psychoanalysis + free-association + dream-analysis + transference + humanistic-therapy + client-centred-therapy + Rogers + Maslow + therapy-effectiveness.
11. Social-Influence + Conformity + Obedience — conformity + Asch + conformity-factors + group-size + unanimity + cohesion + task-difficulty + status + cultural-difference + informational-influence + normative-influence + internalisation + compliance + obedience + Milgram + obedience-factors + proximity + uniform + location + authority-figure + agentic-state + legitimacy-of-authority + minority-influence + consistency + commitment + flexibility + social-influence-conformity + social-influence-obedience + social-influence-compliance.
12. Prejudice + Aggression + Prosocial-Behaviour — prejudice + authoritarian-personality + Adorno + right-wing-authoritarianism + social-dominance-orientation + stereotype + discrimination + prejudice-reduction + education + contact-hypothesis + aggression + biological-explanation + testosterone + serotonin + neural-mechanisms + social-explanation + family + media + culture + psychological-explanation + SLT + social-learning + observational-learning + identification + imitation + aggression-reduction + catharsis + anger-management + media-restriction + prosocial-behaviour + bystander-effect + Darley-Latané + diffusion-of-responsibility + pluralistic-ignorance + empathy-altruism + social-exchange + social-comparison + social-identity-theory + Tajfel + Turner.
13. Attachment + Memory-Development + Language-Development + Cognitive-Development + Social-Development — attachment-types + secure + insecure-avoidant + insecure-disorganised + Bowlby + monotropic-theory + internal-working-model + critical-period + maternal-deprivation + institutionalisation + Romanian-orphans + Ainsworth + strange-situation + animal-studies + Lorenz + imprinting + Harlow + cloth-mother + wire-mother + memory-development + schema + Piaget + assimilation + accommodation + adaptation + language-development + Chomsky-LAD + Skinner + reinforcement + cognitive-development + Piaget + sensorimotor + preoperational + concrete-operational + formal-operational + object-permanence + egocentrism + conservation + Vygotsky + ZPD + scaffolding + social-development + moral-development + Kohlberg + preconventional + conventional + postconventional + gender-development + gender-schema + gender-typing + social-learning-theory.
14. Research-Methods + Experiment-Design + Observation + Correlation + Case-Study + Self-Report + Content-Analysis + Interviews + Questionnaire + Data-Analysis + Descriptive-Statistics + Inferential-Statistics + Significance-Testing + Ethical-Considerations — research-methods + experiment + lab-experiment + field-experiment + natural-experiment + quasi-experiment + IV + DV + extraneous-variable + control + randomisation + counterbalancing + observation + covert + overt + participant + non-participant + naturalistic + controlled + correlation + positive + negative + zero + correlation-coefficient + case-study + single-case + clinical + self-report + questionnaire + interviews + structured + unstructured + content-analysis + quantitative + qualitative + data-analysis + descriptive-statistics + mean + median + mode + IQR + range + standard-deviation + normal-distribution + inferential-statistics + significance-testing + p-value + 0.05 + statistical-significance + directional + non-directional + ethical-considerations + BPS + informed-consent + deception + protection-from-harm + right-to-withdraw + confidentiality + privacy + debriefing + ecological-validity + temporal-validity + population-validity + demand-characteristics + investigator-effects + social-desirability-bias.
15. Theory-Toolkit-Concept-1: Biological-Approach — brain-structure + brain-function + cerebral-cortex + frontal-lobe + parietal-lobe + temporal-lobe + occipital-lobe + cerebellum + brainstem + hippocampus + amygdala + hypothalamus + thalamus + corpus-callosum + neurons + synapse + neurotransmitters + acetylcholine + serotonin + dopamine + GABA + noradrenaline + endocrine-system + pituitary-gland + adrenal-gland + thyroid-gland + testosterone + oestrogen + cortisol + adrenaline + fight-or-flight + brain-scans + fMRI + EEG + CAT + PET + lesion-studies + brain-damage + biological-treatment.
16. Theory-Toolkit-Concept-2: Cognitive-Approach — multi-store-model + sensory-memory + short-term-memory + long-term-memory + levels-of-processing + depth-of-processing + Craik-Lockhart + reconstructive-memory + Loftus + Bartlett + eyewitness-testimony + cognitive-interview + schema + perception + visual-organisation + Gestalt-principles + perception-constancy + visual-illusion + language + language-structure + language-acquisition + Chomsky + Skinner + thought + problem-solving + decision-making + cognitive-bias + heuristics + availability + representativeness + anchoring + cognitive-treatment.
17. Theory-Toolkit-Concept-3: Social-Approach — social-influence + conformity + Asch + conformity-types + informational-influence + normative-influence + internalisation + compliance + obedience + Milgram + obedience-factors + agentic-state + legitimacy-of-authority + prejudice + authoritarian-personality + right-wing-authoritarianism + social-dominance-orientation + discrimination + aggression + biological-explanation + social-explanation + psychological-explanation + SLT + social-learning + observational-learning + aggression-reduction + catharsis + prosocial-behaviour + bystander-effect + Darley-Latané + social-comparison + social-identity-theory.
18. Theory-Toolkit-Concept-4: Developmental-Approach — attachment + attachment-types + secure + insecure-avoidant + insecure-disorganised + Bowlby + monotropic-theory + maternal-deprivation + institutionalisation + Ainsworth + strange-situation + animal-studies + Lorenz + imprinting + Harlow + cognitive-development + Piaget + sensorimotor + preoperational + concrete-operational + formal-operational + Vygotsky + language-development + Chomsky-LAD + Skinner + social-development + moral-development + Kohlberg + gender-development.
19. Theory-Toolkit-Concept-5: Individual-Differences + Research-Methods — personality + Eysenck + trait-theory + Cattell + 16PF + nomothetic + idiographic + intelligence + Spearman + g-factor + Gardner + multiple-intelligences + IQ-testing + mental-age + IQ + abnormality + deviation-from-norm + statistical-infrequency + failure-to-function + deviation-from-ideal + DSM + ICD + therapy + biological-therapy + cognitive-therapy + CBT + behavioural-therapy + psychodynamic-therapy + humanistic-therapy + research-methods + experiment + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations + informed-consent + deception + protection-from-harm + right-to-withdraw + confidentiality.

Section 4 — Section 4, 5, 6 follow the standard playbook structure: AI tutor prompt library + 22-week workflow + score-A*-strategies.

The IGCSE Psychology 0255 playbook continues with:

• Section 4 — The 22-week workflow (Diagnostic → Paper-1-Mastery → Paper-2-Mastery → Paper-3-Mastery → Paper-4-Mastery → Paper-5-Mastery → Research-Methods-Toolkit → Final Sprint).
• Section 5 — The AI tutor prompt library (4 prompts × 19 concepts = 76 prompts) that scores every IGCSE 0255 short-answer + extended-response + design + evaluation + application question against the official Cambridge CAIE 0255 mark scheme.
• Section 6 — Score-A*-strategies: how to master the 5 approaches + 20 sub-topics + 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms; how to write a 12-mark extended-response; how to construct a 15-mark evaluation; how to deploy the 5-paper strategy for the 5 papers; how to integrate biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods mastery at A*-tier.

Section 7 — The Practical-Toolkit (30 tools: research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations + applied-psychology + critical-evaluation)

The Grademy AI tutor operates a 30-tool practical-toolkit for IGCSE Psychology 0255 short-answer + extended-response + design + evaluation + application questions. The toolkit includes:

1. Research-methods-application — selecting the appropriate research method (experiment + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire) for the research question.
2. Experiment-design-construction — designing a lab + field + natural + quasi experiment with IV + DV + control + randomisation + counterbalancing + extraneous-variables.
3. Observation-design-construction — designing a covert + overt + participant + non-participant + naturalistic + controlled observation with observer-bias controls.
4. Correlation-design-construction — designing a correlation study with positive + negative + zero correlation + correlation-coefficient + scattergram.
5. Case-study-application — applying the case-study method to clinical + single-case + forensic + therapeutic contexts.
6. Self-report-design-construction — designing a self-report measure with Likert-scale + semantic-differential + open-questions + closed-questions.
7. Content-analysis-construction — designing a content-analysis study with quantitative + qualitative coding + inter-rater-reliability + sample.
8. Interviews-design-construction — designing structured + unstructured + semi-structured interviews with rapport + leading-questions + social-desirability.
9. Questionnaire-design-construction — designing a questionnaire with open + closed + Likert + ranking + demographic questions.
10. Data-analysis-application — applying descriptive + inferential statistics (mean + median + mode + IQR + range + standard-deviation + p-value + significance-testing) to psychological data.
11. Descriptive-statistics-calculation — calculating mean + median + mode + IQR + range + standard-deviation from raw data sets.
12. Inferential-statistics-application — applying significance-testing + p-value + 0.05 + statistical-significance to research findings.
13. Significance-testing-interpretation — interpreting significance-testing results with directional + non-directional predictions + type-I-error + type-II-error.
14. Ethical-considerations-application — applying BPS-guidelines (informed-consent + deception + protection-from-harm + right-to-withdraw + confidentiality + privacy + debriefing) to research scenarios.
15. Biological-approach-application — applying brain-structure + brain-function + neurobiology + endocrine-system + aggression + biological-treatment to psychological scenarios.
16. Cognitive-approach-application — applying multi-store-model + levels-of-processing + reconstructive-memory + eyewitness-testimony + cognitive-interview + schema + perception + language + thought to psychological scenarios.
17. Social-approach-application — applying conformity + Asch + obedience + Milgram + prejudice + authoritarian-personality + aggression + SLT + prosocial-behaviour + bystander-effect to psychological scenarios.
18. Developmental-approach-application — applying attachment + Bowlby + Ainsworth + maternal-deprivation + animal-studies + cognitive-development + Piaget + Vygotsky + language-development + Chomsky + social-development + moral-development + Kohlberg to developmental scenarios.
19. Individual-differences-application — applying personality + Eysenck + Cattell + intelligence + Spearman + Gardner + IQ-testing + abnormality + DSM + ICD + therapy + biological-therapy + cognitive-therapy + behavioural-therapy + psychodynamic-therapy + humanistic-therapy to individual-differences scenarios.
20. Memory-application — applying multi-store-model + levels-of-processing + reconstructive-memory + Loftus + Bartlett + eyewitness-testimony + cognitive-interview to memory scenarios.
21. Perception-application — applying Gestalt-principles + perception-constancy + visual-illusion + depth-perception to perception scenarios.
22. Emotion-application — applying James-Lange + Cannon-Bard + Schachter-Singer + cognitive-appraisal + Lazarus to emotion scenarios.
23. Motivation-application — applying drive-reduction + arousal + incentive + Maslow + hierarchy-of-needs to motivation scenarios.
24. Personality-application — applying Eysenck + trait-theory + Cattell + 16PF + nomothetic + idiographic to personality scenarios.
25. Intelligence-application — applying Spearman + g-factor + Gardner + multiple-intelligences + IQ-testing + mental-age to intelligence scenarios.
26. Abnormality-application — applying deviation-from-norm + statistical-infrequency + failure-to-function + deviation-from-ideal + DSM-5 + ICD-10 to abnormality scenarios.
27. Therapy-application — applying biological-therapy + psychosurgery + ECT + cognitive-therapy + CBT + behavioural-therapy + systematic-desensitisation + psychodynamic-therapy + psychoanalysis + humanistic-therapy + Rogers + Maslow to therapy scenarios.
28. Social-influence-application — applying conformity + Asch + obedience + Milgram + minority-influence to social-influence scenarios.
29. Prejudice-application — applying authoritarian-personality + right-wing-authoritarianism + social-dominance-orientation + discrimination + prejudice-reduction + contact-hypothesis to prejudice scenarios.
30. Aggression + Prosocial-behaviour-application — applying biological-explanation + social-explanation + psychological-explanation + SLT + observational-learning + aggression-reduction + catharsis + bystander-effect + diffusion-of-responsibility + empathy-altruism + social-comparison + social-identity-theory to aggression + prosocial-behaviour scenarios.

Section 8 — The Theory-Toolkit (19 concepts: biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods + memory-models + cognitive-processes + attachment-theory + abnormality-models)

The Grademy AI tutor operates a 19-concept theory-toolkit for IGCSE Psychology 0255. The concepts are:

1. Biological-approach-theory — brain-structure + brain-function + cerebral-cortex + neurons + synapse + neurotransmitters + endocrine-system + brain-scans + fight-or-flight + biological-treatment + aggression.
2. Cognitive-approach-theory — multi-store-model + levels-of-processing + reconstructive-memory + eyewitness-testimony + cognitive-interview + schema + perception + visual-illusion + language + thought + cognitive-treatment.
3. Social-approach-theory — conformity + Asch + obedience + Milgram + prejudice + authoritarian-personality + aggression + SLT + prosocial-behaviour + bystander-effect + social-identity-theory.
4. Developmental-approach-theory — attachment + Bowlby + Ainsworth + maternal-deprivation + animal-studies + cognitive-development + Piaget + Vygotsky + language-development + Chomsky + social-development + moral-development + Kohlberg.
5. Individual-differences-approach-theory — personality + Eysenck + Cattell + intelligence + Spearman + Gardner + IQ-testing + abnormality + DSM + ICD + therapy + biological-therapy + cognitive-therapy + behavioural-therapy + psychodynamic-therapy + humanistic-therapy.
6. Research-methods-theory — experiment + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations.
7. Memory-models-theory — multi-store-model + working-memory + Baddeley-Hitch + central-executive + phonological-loop + visuospatial-sketchpad + episodic-buffer.
8. Cognitive-processes-theory — perception + Gestalt-principles + perception-constancy + visual-illusion + language + Chomsky + Skinner + thought + problem-solving + decision-making + cognitive-bias + heuristics.
9. Attachment-theory — Bowlby + monotropic-theory + internal-working-model + critical-period + maternal-deprivation + institutionalisation + Ainsworth + strange-situation + animal-studies + Lorenz + Harlow.
10. Abnormality-models-theory — deviation-from-norm + statistical-infrequency + failure-to-function + deviation-from-ideal + DSM-5 + ICD-10 + biological-model + cognitive-model + behavioural-model + psychodynamic-model + humanistic-model.
11. Psychological-research-design-theory — IV + DV + extraneous-variable + control + randomisation + counterbalancing + sampling + bias + ecological-validity + temporal-validity + population-validity + demand-characteristics + investigator-effects + social-desirability-bias.
12. Statistical-analysis-theory — mean + median + mode + IQR + range + standard-deviation + normal-distribution + significance-testing + p-value + 0.05 + type-I-error + type-II-error + directional + non-directional.
13. Ethical-considerations-theory — BPS-guidelines + informed-consent + deception + protection-from-harm + right-to-withdraw + confidentiality + privacy + debriefing + ecological-validity.
14. Conformity-and-obedience-theory — Asch + conformity-factors + informational-influence + normative-influence + internalisation + compliance + Milgram + obedience-factors + agentic-state + legitimacy-of-authority + minority-influence.
15. Prejudice-theory — authoritarian-personality + Adorno + right-wing-authoritarianism + social-dominance-orientation + stereotype + discrimination + prejudice-reduction + education + contact-hypothesis.
16. Aggression-theory — biological-explanation + testosterone + serotonin + neural-mechanisms + social-explanation + family + media + culture + psychological-explanation + SLT + social-learning + observational-learning + aggression-reduction + catharsis + anger-management + media-restriction.
17. Prosocial-behaviour-theory — bystander-effect + Darley-Latané + diffusion-of-responsibility + pluralistic-ignorance + empathy-altruism + social-exchange + social-comparison + social-identity-theory + Tajfel + Turner.
18. Cognitive-development-theory — Piaget + sensorimotor + preoperational + concrete-operational + formal-operational + object-permanence + egocentrism + conservation + Vygotsky + ZPD + scaffolding + social-development.
19. Moral-and-gender-development-theory — Kohlberg + preconventional + conventional + postconventional + gender-schema + gender-typing + social-learning-theory.

Section 9 — Score-A*-Strategy: The 5-Approach Comparison + 4-Paper Strategy + 22-Week Mastery Plan

The 22-week IGCSE Psychology 0255 mastery plan operates in 4 phases:

Phase 1 (Weeks 1-4) — Diagnostic + Approach-Mastery. Diagnostic test to identify gaps across the 5 approaches. Master the 5-approach comparison: which approach explains the behaviour best + which approach has the strongest evidence + which approach has the weakest evidence + how to integrate approaches. Grademy AI tutor scores 10 short-answer + 5 extended-response questions per approach against the Cambridge 0255 mark scheme.

Phase 2 (Weeks 5-12) — Paper-1 + Paper-2 + Paper-3 + Paper-4 + Paper-5 Mastery. Each paper is 1h 30m + 80 marks + 25% — the A*-tier candidate must score 56-64/80 per paper (70-80%) to land the A*. The 4-paper strategy: master the 30-tools practical-toolkit + 19-concepts theory-toolkit + 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms per paper. Grademy AI tutor scores 30 short-answer + 15 extended-response questions per paper against the Cambridge 0255 mark scheme.

Phase 3 (Weeks 13-18) — Research-Methods + Application-Toolkit Mastery. Master the research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations toolkit. Apply the toolkit to 20 psychological scenarios across the 5 approaches. Grademy AI tutor scores 10 design + 10 evaluation + 10 application questions against the Cambridge 0255 mark scheme.

Phase 4 (Weeks 19-22) — Final Sprint + Mock-Paper-1 + Mock-Paper-2 + Mock-Paper-3 + Mock-Paper-4 + Mock-Paper-5. Take 5 full mock papers (one per approach) under timed conditions. Score 70-80% per paper. Grademy AI tutor scores the entire 5-paper + 400-mark mock exam against the Cambridge 0255 mark scheme + identifies final gaps + recommends last-mile study.

Section 10 — Score-A*-Strategy: The 12-mark Extended-Response Construction

The 12-mark IGCSE Psychology 0255 extended-response question (typically PEEL + AO1 + AO2 + AO3 marks) requires:

AO1 (Knowledge + Understanding) — 4 marks. Demonstrate knowledge + understanding of the psychological concept + study + theory. The candidate must state + describe + explain the concept + study + theory with precision (specific terminology + specific study + specific findings + specific implications).

AO2 (Application) — 4 marks. Apply the concept + study + theory to a novel scenario + novel context + novel question. The candidate must apply + transfer + adapt the concept + study + theory to the new scenario (identifying what transfers + what does not transfer + why).

AO3 (Analysis + Evaluation) — 4 marks. Analyse + evaluate the concept + study + theory. The candidate must evaluate (strengths + weaknesses + comparison to alternative approaches + evidence + generalisability + ecological-validity + temporal-validity + population-validity + bias + determinism + reductionism + ethnocentrism + gender-bias + cultural-bias + freewill-vs-determinism + nature-vs-nurture).

For an A* response, the candidate must:

• Use psychological terminology precisely — multi-store-model (not "memory model") + reconstructive-memory (not "false memory") + cognitive-interview (not "police interview") + systematic-desensitisation (not "exposure therapy") + operationalised (not "defined").
• Cite specific studies + findings — Loftus + Palmer (1974) car-crash study with specific findings + Asch (1951) conformity study with specific findings + Milgram (1963) obedience study with specific findings + Ainsworth (1971) strange-situation study with specific findings + Raine et al. (1997) brain-scan study with specific findings.
• Integrate AO1 + AO2 + AO3 — knowledge + application + evaluation in the same paragraph.
• Use comparison-to-other-approaches — biological-approach vs cognitive-approach vs social-approach vs developmental-approach vs individual-differences-approach + research-methods comparison + theory-strengths + theory-weaknesses.
• Conclude with a focused judgement — which approach is strongest + why + which theory is weakest + why + what is the integrated position.

Section 11 — Score-A*-Strategy: The 15-mark Evaluation Construction

The 15-mark IGCSE Psychology 0255 evaluation question requires:

AO1 (Knowledge + Understanding) — 4 marks. Demonstrate knowledge + understanding of the concept + study + theory. The candidate must state + describe + explain the concept + study + theory with precision.

AO2 (Application) — 4 marks. Apply the concept + study + theory to a novel scenario + novel context + novel question.

AO3 (Analysis + Evaluation) — 7 marks. Analyse + evaluate the concept + study + theory. The candidate must evaluate across multiple dimensions + reach a focused judgement.

The 15-mark response requires more depth + more evaluation + more focused judgement than the 12-mark response.

Section 12 — Score-A*-Strategy: The 5-Approach Comparison (PEEL + 5-Perspectives + 5-Evidence-Base + 5-Evaluation)

For the 5-approach comparison (a frequent A*-tier discriminator), the candidate must compare biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods across:

• Perspective — what is the underlying view of behaviour (biological-reductionist + cognitive-information-processing + social-social-construction + developmental-stage-based + individual-differences-trait-based + research-methods-scientific-method).
• Evidence-base — what is the evidence for each approach (brain-scans + lesion-studies + neurotransmitters + animal-studies + EEG + fMRI for biological + experimental + memory-tasks + schema-tests + cognitive-bias for cognitive + lab-experiments + field-experiments + observation-studies + correlation-studies for social + longitudinal + cross-sectional + attachment-classification + animal-studies for developmental + clinical-case-studies + IQ-tests + personality-tests + therapy-outcomes for individual-differences + experiment + observation + correlation + case-study + self-report + content-analysis for research-methods).
• Evaluation — strengths + weaknesses (determinism + reductionism + biological-reductionism + nature-vs-nurture for biological + mechanistic + reductionist + ignores-biological-for-cognitive + ignores-social-for-developmental + ignores-individual-differences for cognitive + ignores-biological-for-social + situationist + ethnocentric + ignores-individual-differences for social + age-sensitive + cultural-sensitive + longitudinal-difficult + animal-studies-validity for developmental + reductionist + complexity-of-individual + trait-vs-state + nomothetic-vs-idiographic for individual-differences + ecological-validity + temporal-validity + population-validity + demand-characteristics + investigator-effects for research-methods).
• Application — how to apply the approach to real-world psychology (psychiatry + pharmacology + clinical-psychology + educational-psychology + forensic-psychology for biological + cognitive-behavioural-therapy + educational-psychology + cognitive-rehabilitation + human-factors-psychology for cognitive + social-psychology + organisational-psychology + sports-psychology + political-psychology for social + developmental-psychology + child-psychology + educational-psychology + attachment-therapy for developmental + clinical-psychology + counselling-psychology + occupational-psychology + forensic-psychology + sports-psychology for individual-differences + research-design + programme-evaluation + policy-evaluation for research-methods).
• Integration — how the approaches complement each other + how the approaches conflict + how to reach an integrated position (bio-psycho-social-model + diathesis-stress-model + cognitive-behavioural-integration + developmental-trajectory-integration + individual-differences-context-interaction).

Section 13 — Score-A*-Strategy: The Research-Methods Toolkit Application

For the research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations toolkit, the candidate must demonstrate:

• Method-selection — choosing the appropriate research method for the research question (experiment for cause-effect + observation for naturalistic-behaviour + correlation for co-occurrence + case-study for in-depth-individual + self-report for attitudes-beliefs + content-analysis for media-text + interviews for detailed-experience + questionnaire for large-sample-survey).
• Design-quality — designing the study with IV + DV + control + randomisation + counterbalancing + sampling + bias-controls.
• Data-collection-quality — collecting data with reliability + validity + ecological-validity + temporal-validity + population-validity.
• Data-analysis-quality — analysing data with descriptive-statistics (mean + median + mode + IQR + range + standard-deviation) + inferential-statistics (significance-testing + p-value + 0.05) + interpretation (directional + non-directional + type-I-error + type-II-error).
• Ethical-considerations — applying BPS-guidelines (informed-consent + deception + protection-from-harm + right-to-withdraw + confidentiality + privacy + debriefing) to research scenarios.

The A*-tier candidate uses the research-methods toolkit to construct study-design + evaluate study-design + apply study-design to novel scenarios + compare study-designs across the 5 approaches + reach a focused judgement on study-quality.

Section 14 — Score-A*-Strategy: The 5-Paper Strategy (Paper-1 + Paper-2 + Paper-3 + Paper-4 + Paper-5)

For the 5-paper strategy, the candidate must:

• Paper-1 (Biological-Approach + Brain + Neurobiology + Endocrine-System + Aggression + Biological-Treatment) — 80 marks, 25%. Master the brain-structure + brain-function + neurobiology + endocrine-system + aggression + biological-treatment toolkit. Score 56-64/80 (70-80%) for A*-tier.
• Paper-2 (Cognitive-Approach + Memory + Perception + Language + Thought + Cognitive-Treatment) — 80 marks, 25%. Master the multi-store-model + levels-of-processing + reconstructive-memory + eyewitness-testimony + cognitive-interview + schema + perception + language + thought + cognitive-treatment toolkit. Score 56-64/80 (70-80%) for A*-tier.
• Paper-3 (Social-Approach + Social-Influence + Conformity + Obedience + Prejudice + Aggression + Prosocial-Behaviour) — 80 marks, 25%. Master the social-influence + conformity + obedience + prejudice + aggression + prosocial-behaviour toolkit. Score 56-64/80 (70-80%) for A*-tier.
• Paper-4 (Developmental-Approach + Attachment + Memory-Development + Language-Development + Cognitive-Development + Social-Development) — 80 marks, 25%. Master the attachment + memory-development + language-development + cognitive-development + social-development toolkit. Score 56-64/80 (70-80%) for A*-tier.
• Paper-5 (Individual-Differences + Personality + Intelligence + Abnormality + Therapy + Research-Methods + Experiment-Design + Observation + Correlation + Case-Study + Self-Report + Content-Analysis + Interviews + Questionnaire + Data-Analysis + Descriptive-Statistics + Inferential-Statistics + Significance-Testing + Ethical-Considerations) — 80 marks, 25%. Master the personality + intelligence + abnormality + therapy + research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations toolkit. Score 56-64/80 (70-80%) for A*-tier.

Total: 400 marks across 5 papers. A*-tier: 320-400 (80-100%) + 280-320 (70-80%). Cumulative A*-B grade benchmark: 280-320/400 (70-80%).

Section 15 — Score-A*-Strategy: The 100+ Studies + 50+ Theories + 50+ Concepts + 30+ Ethical-Considerations + 30+ Statistical-Tests + 30+ Research-Methods + 100+ Terms Mastery

The A*-tier candidate masters the 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms through spaced repetition + active recall + application. The 100+ studies include Loftus + Palmer (1974) + Bartlett (1932) + Asch (1951) + Milgram (1963) + Ainsworth (1971) + Bowlby (1969) + Lorenz (1937) + Harlow (1958) + Piaget + Vygotsky + Chomsky (1959) + Skinner (1957) + Kohlberg (1969) + Eysenck (1967) + Cattell (1943) + Spearman (1904) + Gardner (1983) + Raine et al. (1997) + Zimbardo (1973) + Darley + Latané (1968) + Tajfel + Turner (1979) + Skinner (operant-conditioning) + Pavlov (classical-conditioning) + Watson + Rayner (1920) + Bandura + Bobura (1961) + Bandura (1965) + Freud (psychoanalysis) + Rogers (client-centred-therapy) + Maslow (hierarchy-of-needs) + Beck (cognitive-therapy) + Ellis (REBT) + Wolpe (systematic-desensitisation) + Lazarus + Folkman (stress-and-coping) + Seligman (learned-helplessness) + Rosenhan (1973) + Szasz (anti-psychiatry) + Scheff (labelling-theory) + Cooper + Good (1963) + Watson (child-care) + Geen + Quanty (1977) + Bushman + Anderson (2001) + Williams (1980) + Twenge (2001) + Berger (1962) + Darley (1970) + Staub (1974) + Isen + Levin (1972) + Penner et al. (2005) + McAndrew (1993) + Shotland + Straw (1976) + Batson (1991) + Krebs (1975) + Piliavin (1969) + Bickman (1975) + Lerner (1970) + Borman (1975) + Cunningham et al. (1994) + Strenta + DeLoach (1983) + Gaertner + Dovidio (1977) + Campbell (1965) + Moscovici (1969) + Mugny (1982) + Nemeth (1986) + Asch (1956) + Bond + Smith (1996) + Smith + Bond (1998) + Hofstede (1980) + Triandis (1989) + Gelfand + Realo (1999) + Markus + Kitayama (1991) + Heine (2001) + Nisbett + Masuda (2003) + Mesquita (2001) + Cohen + Vardy (2000) + Tversky + Kahneman (1973) + Kahneman + Tversky (1979) + Tversky + Kahneman (1981) + Tversky + Kahneman (1992) + Gilovich + Savitsky (2002) + McNeil et al. (1982) + Redelmeier + Tversky (1996) + Wilson + Brekke (1994) + Wilson + Schooler (1991) + Wilson + Gilbert (2005) + Dijksterhuis (2004) + Wilson (2002) + Strack (1988) + Schwarz (1990) + Schwarz + Clore (1983) + Gazzaniga (1989) + Sperry (1982) + Levy-Agresti + Sperry (1968) + Gazzaniga (2000) + Gazzaniga + LeDoux (1978) + Weiskrantz (1986) + Milner (1966) + Scoville + Milner (1957) + HM-case-study + patient-HM + Ranganath + Paller (1999) + Schacter (1996) + Squire + Zola (1996) + Baddeley (2000) + Baddeley + Hitch (1974) + Baddeley (1986) + Baddeley (2000) + Anderson (1983) + Collins + Loftus (1975) + Collins + Quillian (1969) + Collins + Quillian (1970) + Rosch + Mervis (1975) + Smith + Medin (1981) + Murphy + Medin (1985) + Schyns + Roddenberry (2006) + Rogers + Kuiper (1977) + Conway + Pleydell-Pearce (2000) + Brewer + Treyens (1981) + Godden + Baddeley (1975) + Grant + Dagenbach (1975) + Jenkins + Dallenbach (1924) + McGeoch + McDonald (1931) + Underwood (1957) + Postman + Underwood (1973) + Wixted + Ebbesen (1991) + Roediger + Karpicke (2006) + Karpicke + Roediger (2008) + Karpicke + Blunt (2011) + Karpicke (2012) + Pyc + Rawson (2009) + Roediger + Karpicke (2006) + Karpicke + Roediger (2008) + Karpicke + Blunt (2011) + Karpicke (2012) + Pyc + Rawson (2009).

The 50+ theories include multi-store-model + working-memory-model + levels-of-processing-model + reconstructive-memory-model + interference-theory + schema-theory + cognitive-appraisal-theory + James-Lange-theory + Cannon-Bard-theory + Schachter-Singer-theory + drive-reduction-theory + arousal-theory + incentive-theory + Maslow-hierarchy + Eysenck-PEN + Cattell-16PF + Spearman-g-factor + Gardner-multiple-intelligences + statistical-infrequency + failure-to-function + deviation-from-ideal + biological-model + cognitive-model + behavioural-model + psychodynamic-model + humanistic-model + Asch-conformity + Milgram-obedience + Zimbardo-prison + authoritarian-personality + social-dominance-orientation + social-learning-theory + bystander-effect + empathy-altruism + social-identity-theory + social-comparison-theory + attachment-theory + monotropic-theory + internal-working-model + maternal-deprivation + critical-period + Piaget-stages + Vygotsky-ZPD + Chomsky-LAD + Skinner-reinforcement + Kohlberg-stages + gender-schema-theory.

The 50+ concepts include memory + perception + emotion + motivation + sleep + personality + intelligence + abnormality + therapy + conformity + obedience + prejudice + aggression + prosocial-behaviour + attachment + cognitive-development + language-development + social-development + moral-development + gender-development + research-methods + experiment + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations + brain + neurons + synapse + neurotransmitters + endocrine-system + hippocampus + amygdala + hypothalamus + visual-illusion + schema + heuristics + cognitive-bias + cognitive-appraisal + drive + incentive + arousal + PEN + 16PF + IQ + mental-age + DSM + ICD + catharsis + aggression-reduction + diffusion-of-responsibility + empathy + altruism + social-identity + ZPD + scaffolding + gender-schema + social-learning-theory.

Section 16 — Score-A*-Strategy: The AI Tutor Prompt Library + 76-Prompt Mastery

The Grademy AI tutor operates a 76-prompt library (4 prompts × 19 concepts) that scores every IGCSE Psychology 0255 short-answer + extended-response + design + evaluation + application question against the official Cambridge CAIE 0255 mark scheme.

The 4 prompt types per concept:

1. Short-answer-prompt — scores 1-5 mark short-answer responses on the concept (knowledge + understanding + comprehension + recall).
2. Extended-response-prompt — scores 12-mark extended-response responses on the concept (AO1 + AO2 + AO3 + PEEL + comparison + evaluation + focused-judgement).
3. Design-prompt — scores research-design + experiment-design + observation-design + correlation-design + case-study-design + self-report-design + content-analysis-design + interviews-design + questionnaire-design responses on the concept.
4. Evaluation-prompt — scores evaluation responses on the concept (strengths + weaknesses + comparison + evidence-base + generalisability + ecological-validity + temporal-validity + population-validity + bias + determinism + reductionism + ethnocentrism + gender-bias + cultural-bias + freewill-vs-determinism + nature-vs-nurture).

The 19 concepts × 4 prompts = 76 prompts. Each prompt is calibrated to the Cambridge 0255 mark scheme + the 5-approach comparison + the 30-tools practical-toolkit + the 19-concepts theory-toolkit + the 100+ studies + the 50+ theories + the 50+ concepts.

For example, the cognitive-approach short-answer-prompt scores:

• "Outline the multi-store-model of memory" (3 marks).
• "Outline the levels-of-processing model of memory" (3 marks).
• "Explain one limitation of the multi-store-model of memory" (2 marks).
• "Outline the cognitive-interview technique" (3 marks).
• "Outline schema theory" (2 marks).

The cognitive-approach extended-response-prompt scores:

• "Discuss the cognitive-approach to memory. Refer to the multi-store-model + levels-of-processing-model + reconstructive-memory-model in your answer" (12 marks).
• "Discuss the cognitive-approach to perception. Refer to Gestalt-principles + perception-constancy + visual-illusion in your answer" (12 marks).
• "Discuss the cognitive-approach to language + thought. Refer to Chomsky-LAD + Skinner-reinforcement + cognitive-appraisal in your answer" (12 marks).

The cognitive-approach design-prompt scores:

• "Design a study to investigate the cognitive-approach to memory" (8 marks).
• "Design a study to investigate the cognitive-approach to perception" (8 marks).
• "Design a study to investigate the cognitive-approach to language + thought" (8 marks).

The cognitive-approach evaluation-prompt scores:

• "Evaluate the cognitive-approach to memory. Refer to the multi-store-model + levels-of-processing-model + reconstructive-memory-model + cognitive-interview in your answer" (15 marks).
• "Evaluate the cognitive-approach to perception. Refer to Gestalt-principles + perception-constancy + visual-illusion in your answer" (15 marks).

The 76-prompt library is the operating system for IGCSE Psychology 0255 A*-tier mastery.

Section 17 — Score-A*-Strategy: The Cambridge CAIE 0255 Mark Scheme Decoded

The Cambridge CAIE 0255 mark scheme is structured around 5 assessment objectives:

• AO1 (Knowledge + Understanding) — 25-30%. Demonstrate knowledge + understanding of psychological concepts + studies + theories. The candidate must state + describe + explain the concept + study + theory with precision (specific terminology + specific study + specific findings + specific implications).
• AO2 (Application) — 25-30%. Apply psychological concepts + studies + theories to novel scenarios + novel contexts + novel questions. The candidate must apply + transfer + adapt the concept + study + theory to the new scenario (identifying what transfers + what does not transfer + why).
• AO3 (Analysis + Evaluation) — 30-40%. Analyse + evaluate psychological concepts + studies + theories. The candidate must evaluate (strengths + weaknesses + comparison to alternative approaches + evidence + generalisability + ecological-validity + temporal-validity + population-validity + bias + determinism + reductionism + ethnocentrism + gender-bias + cultural-bias + freewill-vs-determinism + nature-vs-nurture).
• AO4 (Research-Methods) — 15-20%. Demonstrate knowledge + understanding + application + analysis + evaluation of psychological research methods. The candidate must apply research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations to psychological scenarios.

The A*-tier candidate scores 70-80% on each AO across each paper + 70-80% on the 5-paper + 400-mark total. The 5-paper + 400-mark total A*-tier benchmark: 320-400/400 (80-100%).

Section 18 — Score-A*-Strategy: The 5-Approach + 5-Paper + 400-Mark Mock Exam

For the 5-approach + 5-paper + 400-mark mock exam, the candidate takes 5 timed mock papers under exam conditions:

• Mock-Paper-1 (Biological-Approach) — 1h 30m + 80 marks. Master the brain + neurobiology + endocrine-system + aggression + biological-treatment toolkit.
• Mock-Paper-2 (Cognitive-Approach) — 1h 30m + 80 marks. Master the multi-store-model + levels-of-processing + reconstructive-memory + eyewitness-testimony + cognitive-interview + schema + perception + language + thought + cognitive-treatment toolkit.
• Mock-Paper-3 (Social-Approach) — 1h 30m + 80 marks. Master the social-influence + conformity + obedience + prejudice + aggression + prosocial-behaviour toolkit.
• Mock-Paper-4 (Developmental-Approach) — 1h 30m + 80 marks. Master the attachment + memory-development + language-development + cognitive-development + social-development toolkit.
• Mock-Paper-5 (Individual-Differences + Research-Methods) — 1h 30m + 80 marks. Master the personality + intelligence + abnormality + therapy + research-methods toolkit.

Total: 400 marks. A*-tier: 320-400 (80-100%). A-tier: 280-320 (70-80%). B-tier: 240-280 (60-70%). C-tier: 200-240 (50-60%).

Section 19 — Score-A*-Strategy: The A*-B Grade Benchmark + Russell-Group + Oxbridge Admissions

The cumulative A*-B rate (44.9 percent) is the IGCSE Psychology 0255 benchmark for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions readiness.

Russell-Group + Oxbridge Psychology + Neuroscience + Cognitive-Science + PPE — Cambridge Psychology + Oxford Experimental-Psychology + Oxford PPE + LSE Psychology + UCL Psychology + Warwick Psychology + Bristol Psychology + Durham Psychology + Manchester Psychology + Edinburgh Psychology + KCL Psychology + Exeter Psychology + Birmingham Psychology + Leeds Psychology + Liverpool Psychology + Cardiff Psychology + Met Psychology.

Grademy AI tutor holds all 5 approaches + 20 sub-topics + 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms in working memory for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions readiness.

Section 20 — Conclusion: IGCSE Psychology 0255 closes the IGCSE Social-Science + Psychology gap

Cambridge CAIE IGCSE Psychology 0255 is one of the dominant IGCSE Social-Science subjects globally — with approximately 25,000+ candidates per summer exam session. The 0255 biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods + 5 approaches + 20 sub-topics + 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms syllabus is the bridge-year preparation for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions globally.

The 22-week IGCSE Psychology 0255 workflow (Diagnostic → Paper-1-Mastery → Paper-2-Mastery → Paper-3-Mastery → Paper-4-Mastery → Paper-5-Mastery → Research-Methods-Toolkit → Final Sprint), the practical-toolkit (30 tools: research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations + applied-psychology + critical-evaluation), the theory-toolkit (19 theory concepts: biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods + memory-models + cognitive-processes + attachment-theory + abnormality-models), and the AI tutor prompt library (76 prompts: 4 prompts × 19 concepts) that scores every IGCSE 0255 short-answer + extended-response + design + evaluation + application question against the official Cambridge CAIE 0255 mark scheme are the operating system for IGCSE Psychology A*-tier mastery.

Pairs with IGCSE Sociology 0250 (post-124) + IGCSE Religious-Studies 0490 (post-140) + IGCSE History 0470 (post-121) + IGCSE Geography 0460 (post-122) + IGCSE English-Literature 0475 (post-125) + IGCSE English-Language 0500 (post-120) + IGCSE Mathematics 0580 (post-118) + IGCSE Biology 0610 (post-93) for the international British-curriculum Social-Science + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Humanities + Theology + Philosophy + English + STEM + Modern-Languages cohort targeting A-Level Psychology + A-Level Sociology + A-Level Religious-Studies + A-Level History + A-Level Geography + A-Level English-Literature + A-Level English-Language + A-Level Mathematics + A-Level Biology + A-Level PPE + IB Psychology + IB Sociology + IB World Religions + IB History + IB Geography + IB English A HL + IB Mathematics AA + IB Biology HL + AP Psychology + AP Comparative Government + AP English Literature + AP Calculus + AP Statistics + AP Biology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions globally.

For international applicants (UK, International, EU, North America, Australia, Singapore, Hong Kong), the IGCSE Psychology 0255 A*-B grade is the gold-standard British-curriculum signal for A-Level Psychology + IB Psychology + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Educational-Psychology + Occupational-Psychology + Forensic-Psychology + Sports-Psychology + Russell-Group + Oxbridge admissions readiness.

Pairs with IGCSE Global Perspectives 0457 (post-142)

The IGCSE Psychology 0255 playbook (post-141) + IGCSE Global Perspectives 0457 playbook (post-142) form the IGCSE Cross-Curricular + Critical-Thinking + Psychology + Global-Perspectives pair for the international British-curriculum cohort. The 0255 biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods + 5 approaches + 20 sub-topics + 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms + 30-practical-tools + 19-theory-concepts + 22-week-workflow + 76-AI-tutor-prompts toolkit — particularly the cross-curricular-relevant sections on psychology-of-prejudice + psychology-of-discrimination + psychology-of-stereotyping + psychology-of-prosocial-behaviour + psychology-of-aggression + psychology-of-conformity + psychology-of-obedience + psychology-of-authority + psychology-of-attachment + psychology-of-moral-development + psychology-of-gender-development + psychology-of-cognitive-development + psychology-of-language-development + psychology-of-social-development + psychology-of-cultural-identity + psychology-of-religious-identity + psychology-of-political-identity + psychology-of-national-identity + psychology-of-migration + psychology-of-cross-cultural-psychology + psychology-of-individual-differences + psychology-of-personality + psychology-of-intelligence + psychology-of-abnormality + psychology-of-therapy + research-methods + experiment-design + observation + correlation + case-study + self-report + content-analysis + interviews + questionnaire + data-analysis + descriptive-statistics + inferential-statistics + significance-testing + ethical-considerations — sits alongside the 0457 critical-thinking + reasoning + argument-evaluation + source-analysis + cross-curricular-research + research-methods + ethical-reasoning + active-citizenship + reflective-thinking + persuasive-communication + global-issues-analysis + cultural-perspectives + 5 topics + 12 sub-topics + 50+-global-issues + 500+-sources + 100+-perspectives + 200+-vocabulary + 30-practical-tools + 12-theory-concepts + 22-week-workflow + 30+-AI-tutor-prompts toolkit as the dominant IGCSE Cross-Curricular + Critical-Thinking + Active-Citizenship pair. Grademy AI tutor holds both specs in working memory for A-Level Psychology + IB Psychology HL + IB Psychology SL + IB Global Politics + IB Theory of Knowledge + IB Extended Essay + AP Psychology + Psychology + Neuroscience + Cognitive-Science + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Russell-Group + Oxbridge + LSE + SOAS + UCL + Warwick + Cambridge + Bristol + Durham + Manchester + Edinburgh + Loughborough + Bath + Exeter + Birmingham + Leeds + Liverpool + Cardiff + Met + Cambridge-Psychology + Oxford-Experimental-Psychology + Oxford-PPE + LSE-Psychology + UCL-Psychology + Warwick-Psychology + Bristol-Psychology + Durham-Psychology + Manchester-Psychology + Edinburgh-Psychology + KCL-Psychology + Exeter-Psychology + Birmingham-Psychology + Leeds-Psychology + Liverpool-Psychology + Cardiff-Psychology + Met-Psychology + Cambridge-Global-Politics + LSE-Sociology + SOAS-Philosophy + US + Canadian + Australian + Singaporean + Hong-Kong + Global admissions.

Pairs with IGCSE World Literature 0408 (post-143)

The IGCSE Psychology 0255 playbook (post-141) + IGCSE World Literature 0408 playbook (post-143) form the IGCSE Psychology + Comparative-Literature + World-Literature pair for the international British-curriculum cohort. The 0255 biological-approach + cognitive-approach + social-approach + developmental-approach + individual-differences-approach + research-methods + 5 approaches + 20 sub-topics + 100+ studies + 50+ theories + 50+ concepts + 30+ ethical-considerations + 30+ statistical-tests + 30+ research-methods + 100+ terms + 30-practical-tools + 19-theory-concepts + 22-week-workflow + 76-AI-tutor-prompts toolkit — particularly the world-literature-relevant sections on literature-and-psychology + psychology-of-character + psychology-of-narrative + psychology-of-emotion + psychology-of-motivation + psychology-of-attachment + psychology-of-moral-development + psychology-of-gender-development + psychology-of-identity + psychology-of-cultural-identity + psychology-of-religious-identity + psychology-of-political-identity + psychology-of-national-identity + psychology-of-migration + psychology-of-cross-cultural-psychology + psychology-of-prejudice + psychology-of-discrimination + psychology-of-stereotyping + psychology-of-prosocial-behaviour + psychology-of-aggression + psychology-of-conformity + psychology-of-obedience + psychology-of-authority + psychology-of-trauma + psychology-of-war + psychology-of-conflict + psychology-of-reconciliation + psychology-of-grief + psychology-of-loss + psychology-of-memory + psychology-of-remembrance — sits alongside the 0408 6-set-texts anthology (Poetry + Prose + Drama from global literary traditions) + 30+-poems + 12+-short-stories + 6+-plays + 60+-themes + 100+-characters + 200+-literary-devices + 50+-contexts + 30-practical-tools + 10-theory-concepts + 22-week-workflow + 60-AI-tutor-prompts toolkit as the dominant IGCSE Psychology + Comparative-Literature + World-Literature pair. Grademy AI tutor holds both specs in working memory for A-Level Psychology + A-Level English Literature + IB Psychology HL + IB Psychology SL + IB Global Politics + IB Theory of Knowledge + AP Psychology + Psychology + Neuroscience + Cognitive-Science + Comparative-Literature + World-Literature + Cultural-Studies + Postcolonial-Studies + PPE + Psychiatry + Clinical-Psychology + Counselling-Psychology + Russell-Group + Oxbridge + LSE + SOAS + UCL + Warwick + Cambridge + Bristol + Durham + Manchester + Edinburgh + Loughborough + Bath + Exeter + Birmingham + Leeds + Liverpool + Cardiff + Met + Cambridge-Psychology + Oxford-Experimental-Psychology + Oxford-PPE + LSE-Psychology + UCL-Psychology + Warwick-Psychology + Bristol-Psychology + Durham-Psychology + Manchester-Psychology + Edinburgh-Psychology + KCL-Psychology + Exeter-Psychology + Birmingham-Psychology + Leeds-Psychology + Liverpool-Psychology + Cardiff-Psychology + Met-Psychology + Cambridge-English + Oxford-English + US + Canadian + Australian + Singaporean + Hong-Kong + Global admissions.

Pairs with IGCSE Sociology 0495 (post-148)

The IGCSE Psychology 0255 playbook (post-141) + IGCSE Sociology 0495 playbook (post-148) form the IGCSE Psychology + Sociology + Social-Science + Society + Behaviour + Mind + Methods pair for the international British-curriculum cohort. The 0255 biological-approach + cognitive-approach + behavioural-approach + psychodynamic-approach + humanistic-approach + social-approach + cognitive-development + language-and-thought + perception + memory + learning + emotion + motivation + personality + social-influence + group-processes + conformity + obedience + authority + bystander-intervention + aggression + prosocial-behaviour + prejudice + discrimination + stereotyping + intergroup-relations + research-methods + experiments + surveys + case-studies + observations + correlations + content-analysis + qualitative-methods + quantitative-methods + ethics + debriefing + informed-consent + right-to-withdraw + protection-from-harm + paper-1 + paper-2 + paper-3 + paper-4 + paper-5 + 30+-core-topics + 30+-studies + 100+-concepts + 50+-theories + 30-practical-tools + 10-theory-concepts + 22-week-workflow + 60-AI-tutor-prompts toolkit — particularly the sociology-relevant sections on social-influence + conformity + obedience + authority + bystander-intervention + prejudice + discrimination + stereotyping + intergroup-relations + group-processes + crowd-behaviour + social-movements + collective-action + social-change + attitude-change + persuasion + cognitive-dissonance + self-perception + self-concept + identity + self-esteem + self-presentation + impression-management + social-identity + social-categorisation + social-comparison + attribution + attribution-theory + fundamental-attribution-error + correspondence-bias + just-world-bias + in-group-bias + out-group-bias + ethnocentrism + cultural-differences + cross-cultural-research + cultural-psychology + indigenous-psychology + community-psychology + political-psychology + psychology-of-social-issues + psychology-of-crime + psychology-of-gender + psychology-of-prejudice + research-methods + experimental-methods + quasi-experimental-methods + survey-methods + observational-methods + case-study-methods + content-analysis + correlational-research + longitudinal-research + cross-sectional-research + cross-cultural-research + meta-analysis + systematic-review + evidence-based-practice + replication-crisis + open-science — sits alongside the 0495 2 assessment objectives (AO1-AO5) + 2 papers (Paper 1 Culture and Society + Paper 2 Social Change and Applied Sociology) + 30+-topics + 100+-concepts + 50+-frameworks + 30-practical-tools + 10-theory-concepts + 50-AI-tutor-prompts toolkit as the dominant IGCSE Psychology + Sociology + Social-Science + Behaviour + Society pair. Grademy AI tutor holds both specs in working memory for A-Level-Psychology + A-Level-Sociology + IB-Psychology + IB-Sociology + AP-Psychology + AP-Sociology + Russell-Group + Oxbridge + Cambridge + UCL + LSE + Edinburgh + Manchester + Bristol + Durham + Loughborough + Bath + Exeter + Birmingham + Leeds + Liverpool + Cardiff + Met + Harvard + Yale + Princeton + Columbia + MIT + Stanford + Carnegie-Mellon + Berkeley + NYU + Penn + Chicago + Michigan + Northwestern + Wisconsin + Minnesota + Illinois + Duke + Emory + Vanderbilt + USC + UCLA + UC-Berkeley + Caltech + Georgia-Tech + US + Canadian + Australian + Singaporean + Hong-Kong + Global admissions.