How to Write a Research Question

Why the Research Question Is the Most Important Part

The research question is the single most important decision in any research project. It determines what you read, how you structure your argument, what counts as evidence, and what you can honestly claim to have found. A weak question — one that is too broad, too vague, unanswerable with the resources available, or essentially already answered — produces weak research regardless of how much effort goes into it.

Most students start with a topic, not a question: "I'm interested in climate change," "I want to research AI ethics," "I'd like to do something on the criminal justice system." These are starting points, not research questions. The process of converting a topic into a question is itself a core intellectual skill — one that university students spend years developing, and one that distinguishes research from essay-writing.

A good research question is specific, open (it has no obvious pre-determined answer), answerable with the methods and sources available to you, and genuinely interesting — meaning it is not obvious why the answer should be one thing rather than another. This guide takes you through how to get there.

Step 2: Narrow from Topic to Problem to Question

There is a three-stage narrowing process that produces a viable research question. Most students try to skip stages one and two, which is why most first attempts at a research question are still too broad to work with.

Notice what happened in that narrowing: the topic is enormous (the entire intersection of criminal justice and mental health); the problem identifies a specific tension (disproportionate incarceration despite the existence of alternatives); the question makes that tension answerable by specifying a place (England and Wales), a mechanism (diversion schemes), a population (defendants with acute mental illness), and an outcome (reoffending rates).

The question is also open: it is not obvious whether diversion schemes are effective at reducing reoffending, and serious academic disagreement exists. This makes it a genuine research question rather than a fact-retrieval exercise.

Step 4: Choose the Right Question Type for Your Discipline

Different disciplines have different conventions for what a research question looks like. Matching the question type to the discipline is important — a question framed in the way an economist would ask it is different from how a historian or a biologist would frame the same problem.

Sciences and social sciences: causal or correlational questions

"Does X cause Y?" or "Is X associated with Y?" are the core forms. These require careful attention to methodology: what counts as evidence, how confounds are controlled for, what the limits of the available data are. At pre-university level, it is usually more honest to frame the question as "To what extent does the evidence support the claim that X causes Y?" which allows for engagement with the literature rather than an original empirical study.

Humanities: interpretive and analytical questions

"How should we understand X?" "What does the evidence reveal about Y?" "In what ways does A challenge or complicate B?" These questions do not seek a single right answer but rather a well-argued, evidence-supported position. History, literature, philosophy, and art history all operate primarily in this register. The argument is the answer, and the quality of the argument — not the correctness of a finding — is what is being assessed.

Law and policy: normative and evaluative questions

"Should X be the law?" "Is the current approach to Y adequate?" "How does the legal framework for Z compare to the policy objectives it is meant to achieve?" These questions combine factual analysis with normative argument. A good law or policy research question requires the student to engage with both what the law or policy is and what it should be, using clear criteria for evaluation.

Economics and business: explanatory and evaluative questions

"What explains the phenomenon of X?" "How effective has policy Y been in achieving Z?" "What are the economic mechanisms behind A?" These questions require engagement with economic theory as well as empirical evidence. The strongest economics questions identify a specific market, behaviour, or policy and interrogate it through an analytical framework.

The Role of a Mentor in Developing a Research Question

The single most productive investment a student can make in the early stages of research is working with someone who has navigated this process many times — not a teacher who has guided students through coursework, but a researcher who has spent years formulating their own questions and reading others' work critically.

A mentor operating at doctoral level will quickly identify whether a proposed question is answerable, whether it is actually asking what the student thinks it is asking, and what the relevant literature looks like. They can tell a student within a single session whether a question is viable, and if not, why — and help redirect toward a version that works. This saves weeks of effort spent on a question that was never going to produce a satisfying piece of work.

More importantly, a strong mentor helps the student develop their own research instincts — so that over the course of the project, the student becomes more capable of evaluating questions for themselves. The goal is not to be told what question to ask; it is to learn how to ask better questions. That skill, once developed, is among the most durable assets a student brings into their university education.