IB Psychology Paper 3 2027: A Complete HL Guide
How Paper 3 works: the resource booklet, the four questions, timing, and what question 4 is judged on. Plus the mid-band trap that keeps competent answers at 10 to 12.
Read guideIB Psychology HL · Paper 3
PsychExcel Paper 3
Paper 3 material will be added here only when it is connected directly to a completed PsychExcel resource.
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Paper 3 and HL guides
How to Read Tables and Graphs in IB Psychology Paper 3
Question 1 asks for one limitation, explained properly. What each graph type hides, how to read error bars, the limitations that transfer to any booklet, and what turns a 1-mark answer into a 3-mark one.
Read guideQuantitative Data in IB Psychology: What HL Students Need to Know
Paper 3 question 2 is about reading numbers and checking conclusions, not calculating. Descriptives, results tables, the gap between findings and conclusions, and how to run claim surgery.
Read guideQualitative Data in IB Psychology: What HL Students Need to Know
Paper 3 question 3 asks you to judge qualitative research by qualitative standards. Credibility, transferability and reflexivity, the three sentences that cost marks, and how to match a fix to a flaw.
Read guideP-Values, Significance and Correlation in IB Psychology
What p actually means and what it does not, why significance and effect size are separate questions, how to read r honestly, and how to turn "correlation is not causation" into a real point.
Read guideIB Psychology HL Extensions: Culture, Motivation, Technology and Data Analysis
The three HL extensions are ways of explaining behaviour, not extra topics. The twelve combinations, what Paper 3 assumes you already know, and the four ways your own knowledge earns marks.
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