IB Psychology IA: Complete Walkthrough

24th August, 2026 | Abhishek Malani | 12 Min Read
Introduction
If you’re researching the IB Psychology IA, timing matters more than usual right now, because the assessment itself just changed in a fundamental way. Starting with first teaching in the 2025-26 school year and first assessment in May 2027, the IA is no longer a report on an experiment you actually ran; it’s a hypothetical research proposal, and for the first time, it’s required at both SL and HL, not just HL.
At Quest for Success, we’ve built this IB Psychology IA guide to walk you through exactly what the new proposal format asks of you, step by step, along with IB Psychology IA ideas to help you find a genuine starting point for your own research question.
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Table of Contents

What the IB Psychology IA Is (and What Just Changed)

For years, the IB Psychology internal assessment example most students followed was straightforward: replicate a study from the syllabus with a small modification, run it on a group of participants, and write up the results. That version is being phased out. For the cohort first taught the new syllabus from August 2025 onward, sitting exams from May 2027, the IA has shifted to a research proposal, up to 2,200 words, where you design a study you don’t actually carry out.
A few things are genuinely different about the new format:
  • It’s a proposal, not an experiment report. You’re no longer collecting or analyzing real data; you’re planning a study and justifying every methodological choice you’d make.
  • SL students now complete an IA too. Previously, only HL students submitted an Internal Assessment in Psychology; SL students sat an additional written exam instead. That’s changed under the new syllabus.
  • It’s marked out of 24 marks, common to both SL and HL, rather than the previous 22-mark, HL-focused version.
  • HL students still do practicals in class, interviews, observations, surveys, to build research-method understanding, but those practicals aren’t what gets written up and submitted as the IA itself.
The shift reflects a broader change in emphasis: rather than rewarding procedural execution, the new IA rewards research reasoning- can you justify why a particular method, sample, and analysis plan is genuinely the right tool for investigating a real-world problem affecting a specific population?

IA Structure: What Your Research Proposal Requires

Your IB Psychology IA research proposal needs to investigate a clearly defined “population of interest” using one of four approved research methods, and demonstrate genuine reasoning at every stage, not just procedural description. At minimum, your proposal should:
  • State a focused, answerable research question tied to a real-world problem affecting a specific population, not a vague general interest area.
  • Choose and justify one research method, experiment, interview, observation, or survey, explaining specifically why it’s the most appropriate tool for your aim, not just describing how that method works in general.
  • Detail your proposed procedure, including sampling technique, participant characteristics, and research setting, with enough specificity that someone else could understand exactly how the study would run.
  • Address ethical considerations relevant to your proposed population and method, informed consent, right to withdraw, confidentiality, and any particular sensitivities tied to your chosen population.
  • Plan your data analysis, describing what you’d measure and how you’d analyze the results, even though you won’t actually collect or analyze real data.
  • Reflect on your proposal’s potential contribution, connecting your research design back to real-world relevance and the broader idea of psychological research as a tool for understanding or improving the human condition.
Because you’re not executing the study, the emphasis shifts heavily toward justification: examiners want to see that you understand why each choice you’re proposing is the right one, not just that you can describe standard research-methods vocabulary correctly.
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The Four Contexts and Four Research Methods

Your IB Psychology IA proposal needs to sit within one of four mandatory contexts introduced in the revised course:
  • Health and Well-Being
  • Human Development
  • Human Relationships
  • Learning and Cognition
And it needs to use one of four approved research methods:
  • Experiment
  • Interview
  • Observation
  • Survey
Choosing a context and method combination that genuinely fits your research question matters more than picking whichever sounds most sophisticated. A question about how sleep deprivation affects working memory naturally sits well within Learning and Cognition using an experimental method; a question about how a support group affects caregivers’ wellbeing might fit better within Health and Well-Being using an interview-based approach. The strongest proposals let the research question drive the context and method choice, rather than forcing a question to fit a method chosen first.
Throughout your proposal, the revised syllabus also expects you to engage with a set of core concepts- bias, causality, change, measurement, perspective, and responsibility- woven into your reasoning rather than mentioned as a checklist. A strong methodology section, for example, doesn’t just describe your sampling technique; it reflects on potential bias in that sampling and how it might affect the study’s findings.

Sample IA Walkthrough, Step by Step

Here’s how a strong IB Psychology IA research proposal typically comes together, from a blank page to a finished 2,200-word document.
  • Step 1: Identify a real-world problem and population. Start from a genuine question about a specific group of people, not an abstract psychological phenomenon in isolation. “How does exposure to social media influence body image in adolescent girls”. Names a real problem and a real population; “does social media affect self-esteem” is too broad to build a focused proposal around.
  • Step 2: Choose your context and research method. Decide which of the four mandatory contexts your question fits best, then choose the research method- experiment, interview, observation, or survey- that would genuinely produce the most useful answer to your specific question.
  • Step 3: Draft your research question and rationale. Write a clear, focused research question, then explain why it matters, connecting it to existing psychological theory or prior research relevant to your chosen context.
  • Step 4: Design your proposed methodology. Detail your sampling approach, participant characteristics, materials, and procedure with real specificity, then justify each choice. Why this sample size and sampling method? Why this particular measurement tool?
  • Step 5: Address ethics. Identify the specific ethical considerations relevant to your population and method, not a generic list, and explain how your proposed procedure would address them.
  • Step 6: Plan your analysis. Describe what data you’d expect to collect and how you’d analyze it, including which descriptive and inferential statistics (for quantitative approaches) or thematic analysis techniques (for qualitative approaches) would be appropriate.
  • Step 7: Reflect and evaluate. Discuss the proposal’s potential strengths and limitations, and connect it back to real-world relevance, how might this research, if actually conducted, contribute to understanding or addressing the problem you identified in Step 1.

IB Psychology IA Ideas by Approach

A few IB Psychology IA ideas, organized by context, to help spark your own focused research question: 
  • Health and Well-Being: To what extent might mindfulness-based interventions reduce self-reported stress in university students? How might sleep quality relate to reported anxiety levels in working adults?
  • Human Development: How might parenting style relate to self-esteem development in early adolescence? To what extent might screen time influence attention span in primary-school-aged children?
  • Human Relationships: How might attachment style relate to conflict resolution strategies in romantic relationships? To what extent might in-group/out-group dynamics affect cooperation in a shared-resource task?
  • Learning and Cognition: How might sleep deprivation affect working memory performance in adolescents? To what extent might interleaved practice improve retention compared to blocked practice in a classroom setting?
Strong proposals share a pattern: a specific population, a real-world-relevant problem, and a research method genuinely suited to answering that particular question, rather than a method chosen because it’s the one you’re most comfortable describing.

Common Mistakes When Writing Your IA

  • Treating the proposal like an experiment report: Since you’re not actually collecting data, don’t write your methodology and analysis sections as if you already have results; keep the entire proposal framed around what you would do and why.
  • Choosing a research question that’s too broad: A focused question about a specific population and variable produces a far stronger proposal than a general topic area with no clear investigative angle.
  • Describing methodology without justifying it: The new format rewards reasoning heavily; explaining why a sampling method or research method is appropriate matters as much as describing it.
  • Ignoring the core concepts: Bias, causality, change, measurement, perspective, and responsibility should show up throughout your reasoning, not as a single paragraph bolted onto the end.
  • Generic ethics sections: A list of standard ethical principles copied from a textbook scores far lower than a discussion of the specific ethical considerations relevant to your actual proposed population and method.
  • Weak real-world connection: The new syllabus explicitly frames psychological research as a tool for understanding or improving real-world problems; a proposal that never connects back to genuine relevance misses a key part of what’s being assessed.

How Quest for Success Can Help

Designing a genuinely well-justified research proposal, one that’s focused enough to explore in real depth within 2,200 words, but ambitious enough to demonstrate real research reasoning, takes real guidance, especially with a format this new. At Quest for Success, we help students narrow a shortlist of IB Psychology IA ideas into a focused, well-scoped research question, choose a context and method combination that genuinely fits, and build the methodological justification and ethical reasoning examiners look for under the revised criteria.

Summary

The IB Psychology IA has undergone a fundamental change for students first taught the revised syllabus from August 2025 onward, sitting exams from May 2027: instead of executing and reporting on an actual experiment, students now write a hypothetical research proposal of up to 2,200 words, common to both SL and HL and marked out of 24 marks. The proposal must investigate a real-world problem affecting a specific “population of interest,” using one of four approved research methods (experiment, interview, observation, or survey) situated within one of four mandatory contexts (Health and Well-Being, Human Development, Human Relationships, or Learning and Cognition), while weaving core concepts like bias, causality, and responsibility throughout the reasoning rather than treating them as a checklist.
Because the study is never actually conducted, the strongest proposals focus heavily on justification: why this method, this sample, and this analysis plan are genuinely the right choice for this specific research question, rather than simply describing research-methods vocabulary correctly. A focused population and problem, a method genuinely suited to the question, specific rather than generic ethical reasoning, and a clear connection back to real-world relevance consistently separate strong proposals from ones that read like a procedural checklist. HL students still complete hands-on practicals in class to build research-method fluency, but it’s the written proposal itself, not the practicals, that gets submitted and marked.
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FAQs

No, not under the revised syllabus. Students first taught from August 2025 onward and examined from May 2027 submit a hypothetical research proposal rather than executing and reporting on an actual study.
Yes. Under the previous syllabus, only HL students completed an Internal Assessment. Under the revised syllabus, both SL and HL students complete the research proposal IA.
Up to 2,200 words, marked out of 24, common to both SL and HL.
Four research methods: experiment, interview, observation, or survey. Four mandatory contexts: Health and Well-Being, Human Development, Human Relationships, or Learning and Cognition.
Yes, but be careful about which version you’re following. Many existing guides and examples describe the previous experimental replication format, which no longer applies to students under the revised syllabus; always check that any example or guide you’re using matches your actual assessment cohort.
Need help scoping your research question or structuring your IB Psychology IA under the new proposal format? Reach out to Quest for Success; we’re here to help you turn a genuine research question into a focused, well-justified proposal.
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