Revision guide
IB Psychology
Studies, critical thinking, and how to structure essays that hit every criterion.
IB Psychology is an essay subject disguised as a science. The content — biological, cognitive, and sociocultural approaches to behaviour — is learnable; the grades are decided by how well you deploy named research studies as evidence and how genuinely you evaluate them. Every extended response needs studies described accurately (aim, method, findings) and then *used*: linked to the question, compared, and critiqued for methodology, ethics, and generalizability.
The efficient way to study Psychology is to build a study bank: a curated set of research studies, each usable across multiple possible questions. Fifteen well-chosen studies, known deeply, beat forty known vaguely — most exam questions can be answered from a small, versatile core.
How you're assessed
Paper 1 (core approaches)
Short-answer questions plus one essay from the three approaches. The short answers want compressed precision — one study, clearly linked. The essay wants structure: argument, evidence, evaluation woven throughout rather than bolted on at the end.
Paper 2 (options)
Essays on your chosen option topics. Because options are narrower, examiners expect depth: richer study detail and more sophisticated critical thinking than Paper 1.
Paper 3 (HL, research methods)
Questions analyzing a described qualitative study. Learn the method vocabulary (sampling types, credibility, reflexivity) — Paper 3 marks are formulaic once the terminology is solid.
The IA (Experimental study)
A replication of a published experiment with your own analysis. Marks concentrate in the analysis and evaluation sections; run the statistics correctly and discuss limitations specifically, not generically.
How to revise
Build a versatile study bank
For each syllabus topic, pick two studies that can serve multiple question phrasings. For each: aim, brief method, findings, and two evaluation points. Review them with spaced repetition until retrieval is instant.
Practice essay plans, not just essays
Ten-minute plans — thesis, two or three studies, evaluation angles, conclusion — let you rehearse many more questions than full essays do, and planning is the skill that fails in exams.
Evaluate with frameworks
Method, ethics, sample, culture, temporal validity. Run every study through that lens during revision so critical thinking appears throughout your essays instead of as a final paragraph.
Learn command term depth
'Outline' wants compact accuracy; 'discuss' and 'evaluate' want a balanced argument. Matching depth to the term is worth a band on most essays.
Mistakes examiners see every year
Describing five studies superficially instead of using two studies analytically.
Inventing or misremembering study details — examiners know the classic studies well.
Tacking evaluation onto the end instead of integrating it with the argument.
Ignoring the exact question wording and writing the rehearsed neighbouring essay.
Choosing an IA experiment with an effect too subtle to detect in a school sample.
What's in the syllabus
Biological approach
Localization · Neurotransmission · Hormones · Genetics · Evolutionary explanations · Research methods
Cognitive approach
Schema theory · Models of memory · Biases in thinking · Emotion and cognition · Reliability of memory
Sociocultural approach
Social identity theory · Social cognitive theory · Stereotypes · Culture · Enculturation · Acculturation
Options
Abnormal psychology · Developmental psychology · Health psychology · Human relationships
Research methods
Experiments · Case studies · Interviews · Observations · Ethics · Validity and reliability
Frequently asked questions
Is Psychology a lot of memorization?
There's a real recall load (studies and terminology), but the grades are decided by argumentation. Think of it as: memorize a compact evidence base, then practice writing with it.
How many studies do I actually need?
A well-chosen bank of roughly 12–18 studies, each usable across several topics, covers Paper 1 and your options comfortably at SL; HL adds a handful more.
Does HL Psychology differ much from SL?
HL adds Paper 3 (qualitative research methods), an extra option, and HL extensions in the core. The essay skills are identical — HL is more volume, not a different game.
Put this guide into practice
Everything above — topic-filtered practice questions, spaced-repetition flashcards, and a syllabus checklist for Psychology — is free on Baccly.
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