IA Research Question: How to Write a Strong One

If you have ever stared at a blank document with the words IA at the top, you already know the strange pressure of the first sentence. Not because you lack ideas, but because you have too many. The easiest trap is believing your IA needs a “big” question to sound impressive. In reality, the highest-scoring work usually starts with something small, clear, and testable, then builds depth through analysis.

This guide shows you how to write a strong IA research question that is focused, analytical, and realistic under IB constraints. If you want to see what strong questions look like across subjects, start with RevisionDojo’s coursework exemplars and notice how often the best questions are simple on the surface.

Quick checklist for a strong IA research question

Before you fall in love with a topic, run your IA question through this filter:

• Specific: one relationship, one angle, one slice of time

• Feasible: data and evidence you can actually access

• Analytical: invites evaluation, not a summary

• Rubric-aligned: clearly fits your subject’s expectations

• Defensible: you can justify why you chose it

When you are unsure, it helps to compare your draft to the patterns discussed in Why Most IA Research Questions Are Too Broad. A lot of stress disappears when your question gets smaller.

Why your IA research question quietly determines your grade

An IA is not graded on how interesting your topic sounds. It is graded on how well your investigation does what the criteria demand. And your research question decides whether that is even possible.

A good IA research question sets:

• Scope (what you will cut, not what you will include)

• Method (what counts as evidence, data, or sources)

• Analysis (what comparisons, trends, or judgments you can make)

• Structure (how naturally your writing will flow)

If you want a deeper walkthrough of how focus and clarity work together, keep Refine Your IA Research Question for Clarity and Focus open while you draft.

Start broad, then narrow until it becomes measurable

Most IA ideas begin as a theme: “climate change,” “memory,” “consumer behaviour,” “gender,” “food.” Themes are fine. They just are not questions.

A practical narrowing method is a three-step zoom:

Choose a context

Pick a place, group, text, system, or time window.

Choose a relationship

Ask what changes what, or what explains what.

Choose a measure

Decide how you will observe that relationship.

For example:

• Broad theme: “plant growth”

• Narrowed topic: light wavelength and basil growth

• IA research question: “How does blue LED light compared to red LED light affect the growth rate of basil plants over 14 days?”

This kind of clarity makes your method simpler and your analysis cleaner. If you need inspiration for what “good narrow” looks like, browse subject collections like IB Biology IA exemplars or Maths AA IA exemplars.

Make your IA question analytical (not just descriptive)

A reliable test: if your IA can be answered by a textbook paragraph, it is probably descriptive.

Descriptive questions often start with:

• “What are the effects of…”

• “What is…”

• “How does X work…”

Analytical questions create space for judgment using:

• “To what extent…”

• “How significant…”

• “How effectively…”

• “How does X compare to Y…”

Example shift:

• Weak: “What are the effects of caffeine on the human body?”

• Stronger IA: “To what extent does caffeine concentration affect reaction time in students aged 16–18 under the same testing conditions?”

Notice what improves: variables, population, and a measurable outcome. This is the difference between telling and investigating.

Align the IA research question with your subject’s rules

The IB is consistent about one thing: every subject has its own idea of what counts as good evidence.

• History IA: you need a focused historical debate with room for evaluation of sources (and a manageable time frame). For targeted guidance, see 10 Expert Tips to Choose a Focused and Clear History IA Research Question.

• Sciences IA: you need a testable relationship, controlled variables, and analysis that goes beyond “the results show.” A good example walkthrough is Sample IB Biology IA: A Step-by-Step Example.

• Math IA: you need a mathematical exploration that is more than calculations, with reasoning, modelling choices, and reflection.

• Digital Society IA: your question should guide conceptual application and evaluation, not feature description. See How to Write a Strong IB Digital Society IA Research Question.

If you are working across coursework types, the hub at IB IA Guides helps you check what your subject actually expects before you lock your IA question.

Test feasibility like a scientist (even if you are not one)

Here is the uncomfortable truth: a brilliant IA research question fails if you cannot collect credible evidence.

Ask these feasibility questions:

• Can I access the data, participants, texts, or sources without bending rules?

• Can I collect enough evidence in time to analyse it well?

• Can I repeat measurements or triangulate sources for reliability?

• Can I answer this within the word limit without rushing evaluation?

If the answer is “maybe,” refine the question, not your sleep schedule.

Use RevisionDojo to stress-test your IA question early

A strong IA question is not just written, it is tested.

Here is a simple workflow using RevisionDojo that many students use when deadlines start feeling real:

• Compare your draft to RevisionDojo’s coursework exemplars to see if your scope and phrasing match high-scoring patterns.

• Use the Coursework Library to find examples in your subject, then notice how introductions justify the research question.

• Use AI Chat to pressure-test feasibility: ask what variables are unclear, what evidence you would need, and what could go wrong.

• Use Grading tools once you have a draft, so your structure and evaluation align with criteria.

• When exams approach, protect your time by using the Questionbank, Study Notes, and Flashcards to keep revision moving while your IA develops.

If you need a final-stage checklist, How to Proofread and Polish Your IA Before Submission pairs well with a strong research question because it shows you what examiners notice when everything is nearly finished.

Conclusion: treat your IA question like a compass

A strong IA research question does not try to impress. It tries to work. It narrows your world so your analysis can deepen, and it keeps your writing honest because it forces you to use evidence rather than vibes.

If you want to move from “I think this is okay” to “this is criteria-friendly,” spend 20 minutes browsing RevisionDojo’s coursework exemplars, then draft two versions of your IA question: one slightly narrower, one slightly more analytical. Pick the one you can actually prove.

When you are ready to build the rest, RevisionDojo is the one place that supports the whole journey: Study Notes, Flashcards, AI Chat, Grading tools, the Coursework Library, and when exam season hits, the Questionbank, Mock Exams, and Predicted Papers to keep your momentum steady while your IA comes together.