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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, United Kingdom

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.

Hilary Rowark, St. Christopher’s School, Bahrain

I am very grateful to have an "online collegue" to get new input from, and very importantly, a very organized and structured such.

Viktoria Bergö, Aranäsgymnasiet, Sweden

Subscriber comments


  • Dear Charlotte Yes, simply because they cannot ask them about the negative or positive effects for that question. You will see in the textbook that there is a debate provided about the extent of the effect, but four studies are not necessary.
  • 12 Jun Marina Kalashnikova
    Writing the Exploration
    Thank you very much John!
  • 11 Jun Charlotte Cachia
    Study guide: Cognition and tech
    Dear John, Thank you for your quick response. This may be a silly question, but is there a reason you don't cover two positive and two negative studies for the HL tech on emotion and cognition subtopic too?
  • Dear Charlotte You can see here what I do with my students for the core: As for the extension, I have them learn two positive and two negative for the effects - and then two studies on emotion for a total of six studies. When it comes...
  • 11 Jun John Crane
    Getting started with IA
    Dear Louise You are right. It sounds like they have over-simplified it and so they are only doing a survey.
  • Dear James I tell my own students to write: There have not been any pheromones found to influence human behaviour. However, MHC in many ways acts like a pheromone. (or whichever chemical they are going to write about).
  • 11 Jun Charlotte Cachia
    Study guide: Cognition and tech
    Hi John, I apologise in advance for the wordy question! I've just been reading the comments posted above. I have been merging the cognitive processes and reliability of cognitive processes subtopics as 'one', since if you're answering a...
  • 11 Jun James Milliken
    LP8: Pheromones and human attraction
    Hi John, It's getting late! I hope your end of year and summer go well. Wedekind does not identify a particular pheromone. I see your response above, but for clarity, how might a student introduce it to answer something like "Explain one effect...
  • 11 Jun Louise Vaughan
    Getting started with IA
    Hi John, I have some students who want to investigate Optimism Bias doing a small part of Weinstein's study. Their plan is to use the questionnaire and ask participants to rate the likelihood of events happening to them (only) So, IV -...
  • 11 Jun Anne-Sofie Pedersen
    Extended Essay
    Thank you, John :)
  • 11 Jun John Crane
    Extended Essay
    Dear Anne-Sofie For her counter-argument she should find examples of how social media may improve/help body image. For example, / Using "tv ads and magazines" is not very relevant to the question. They do not reflect the behaviors that...
  • 11 Jun John Crane
    Extended Essay
    Dear Maria The question is a good one, but would be better if it were focused on a specific range of behaviours. What are the brain differences and behaviours that your student is interested in? the argument that there are / are not any differences...