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14 Oct 2026
Research questions - IA and EE
What is the difference between an extended essay research question and an IA research question (RQ)? The first difference is that the IA proposal does not have to have an RQ; an aim is sufficient. But...
11 Oct 2026
Reflecting on P2B
In the second year of giving students practice Papers 2, Section B, I see they repeatedly make mistakes evaluating a study. These mistakes reflect more a misunderstanding of the goals of the assessment...
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See all"John Crane provides an invaluable resource for all IB Psychology teachers. The site provides up to date studies and relevant material in the current news. It has become my go-to source for IB specific materials."
Graham Samson
Exeter College
"An excellent resource which really supports my teaching. I particular have used the Paper 3 stimulus material - they have been a great resource especially the model answers."
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St. Christopher’s School
Subscriber comments
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where do I find the lesson on how to write a good research question? I saw it earlier, but I can not find it anymore. Could you send me the link please?
Internal Assessment -
Dear Jonassah Population validity is the result of sampling bias. If a sample is not representative of the target population to which the researcher would like to generalise their results, because of omissions of groups of people, then the findings...
Bias -
Dear Suzanna It does not have to link back to the class practical.
Paper 2: Section A
Laura
Site authorDear Warren The IB will be training moderators on how to judge what is an appropriate tool, but you make a good point, in that we could add something for teachers on what would be a good tool for measuring a certain behaviour, or observing it....
Sample questionnaire 1