Streamlined AIResearch Question Examples by Type and Discipline
50+ research question examples organized by type and discipline, with before-and-after comparisons showing what makes a research question strong or weak.
A research question is the specific, focused question that your study is designed to answer. It determines what data you collect, which method you use, and what counts as a finding. A poorly defined research question leads to unfocused studies; a strong one constrains your work productively and makes your methodology choice obvious.
This guide covers the four main types of research questions with examples across multiple disciplines, shows what separates weak questions from strong ones, and explains how to narrow a broad topic into a workable question.
The Four Types of Research Questions
Most research questions fall into one of four categories, each suited to a different kind of inquiry:
| Type | What it asks | When to use it |
|---|---|---|
| Descriptive | What exists? What is the pattern or frequency? | When little is known about a phenomenon; you want to document it |
| Comparative | How do two or more groups or conditions differ? | When you want to test whether a difference exists between groups |
| Causal | Does X cause or influence Y? | When you want to explain why something happens, often using experiments |
| Exploratory | What are the dimensions, meanings, or processes of X? | Early-stage research; phenomena that are new, complex, or poorly understood |
Descriptive Research Question Examples
Descriptive questions document a phenomenon: its frequency, distribution, characteristics, or patterns. They do not seek to explain causes or establish relationships.
Education
- How many hours per week do first-generation college students spend using tutoring services?
- What types of feedback do elementary school teachers provide most often on written assignments?
- How do undergraduate students in STEM programs describe their sense of belonging during their first semester?
Public health
- What proportion of adults in rural counties report having a primary care physician?
- What screening rates for colorectal cancer exist among adults aged 50 to 75 in low-income zip codes?
Psychology
- What coping strategies do newly diagnosed cancer patients report using most frequently?
- How do night-shift nurses describe their sleep patterns during weeks with rotating schedules?
Business / organizational behavior
- What communication tools do fully remote teams in the technology sector use most frequently?
- How do small business owners in the food service industry describe their hiring challenges?
Sociology / demographics
- What is the distribution of commute times among workers in the ten largest US metropolitan areas?
- How have workforce participation rates among adults aged 55 to 64 changed over the past 20 years?
Comparative Research Question Examples
Comparative questions examine differences between two or more groups, time periods, policies, or conditions. The answer explains how things differ, not necessarily why.
Education
- How do exam pass rates differ between students who use active recall methods and those who rely on passive rereading?
- How does the proportion of students completing algebra by eighth grade differ between high- and low-income school districts?
- How do graduation rates differ between community college students who participate in first-year experience programs and those who do not?
Healthcare
- How do patient recovery times differ between traditional post-surgical care and accelerated recovery protocols?
- How do mental health service utilization rates compare between rural and urban adolescents with anxiety diagnoses?
Economics
- How do household savings rates differ between countries with mandatory pension enrollment and those with opt-in systems?
- How do starting salaries for computer science graduates compare across public and private universities?
Political science
- How do voter turnout rates differ between jurisdictions with same-day registration and those with advance registration deadlines?
- How does public support for climate legislation differ between voters who identify as urban and those who identify as rural?
Organizational behavior
- How do employee retention rates differ between companies that offer remote work flexibility and those that require full-time office attendance?
Causal Research Question Examples
Causal questions ask whether one variable causes or significantly influences another. These are most appropriate when you have enough evidence to hypothesize a mechanism and can design a study to isolate the variable of interest.
Education
- Does the implementation of AI-assisted feedback tools improve the essay scores of high school students?
- To what extent does increasing homework load beyond two hours per night affect academic performance in middle school students?
- Does participation in a summer bridge program reduce first-semester course failure rates among first-generation college students?
Psychology
- To what extent does a daily 15-minute mindfulness practice reduce self-reported stress levels in corporate employees?
- Does motivational interviewing reduce relapse rates in adults with alcohol use disorder compared to standard brief counseling?
Public health
- Does providing free access to naloxone through pharmacies reduce opioid overdose mortality rates at the county level?
- To what extent does a school-based nutrition education program change fruit and vegetable consumption among middle school students?
Economics / policy
- Does a minimum wage increase above $15 per hour affect employment rates among workers aged 16 to 24 in affected cities?
- To what extent does providing small-business grants in low-income neighborhoods affect new business survival rates at five years?
Computer science / HCI
- Does replacing password authentication with passkeys reduce account recovery support tickets in consumer-facing applications?
Exploratory Research Question Examples
Exploratory questions investigate phenomena that are new, poorly understood, or too complex for a tightly controlled design. They use qualitative methods to map the terrain before more focused research is possible.
Sociology
- What are the primary concerns of gig economy workers regarding income predictability and benefits access?
- How do first-generation immigrants in high-skilled occupations navigate credential recognition in the United States?
Urban planning / environment
- How do city residents perceive the integration of vertical farming into local food distribution networks?
- What factors do community members in flood-prone neighborhoods weigh when deciding whether to relocate?
Technology
- What are the primary concerns of online users when managing privacy settings on emerging social platforms?
- How do small business owners describe their experience adopting AI tools for customer communication?
Healthcare / clinical
- What factors influence whether rural adults seek mental health care following a serious physical health diagnosis?
- How do emergency room nurses describe the conditions that contribute to compassion fatigue?
Education
- How do students from low-income backgrounds describe their experience navigating financial aid during their first year of college?
- What do students who leave STEM majors report as the key factors in their decision?
Weak vs Strong: Before-and-After Comparisons
The difference between a publishable research question and a failed one is often specificity. Here are common weak questions revised into strong ones:
| Weak question | Problem | Strong version |
|---|---|---|
| Why is social media bad? | Too broad, loaded, not answerable empirically | How does daily social media use of more than 3 hours affect self-reported loneliness in adults aged 18 to 25? |
| Does education matter? | Vague; "matter" is undefined | How does completing a bachelor's degree affect lifetime earnings for first-generation college students compared to their parents' generation? |
| What are students' experiences? | No population, context, or phenomenon specified | How do transfer students at four-year universities describe their sense of social belonging during their first semester? |
| Is remote work good or bad? | Evaluative framing without a measurable outcome | How does the shift from fully in-office to fully remote work affect self-reported work-life balance among employees with children under 10? |
| Do people trust AI? | Too broad; which people, which AI, which context? | How do primary care physicians describe their level of trust in AI-generated diagnostic suggestions for common presenting symptoms? |
| Why do students drop out? | Causal framing without a defined population or design | What factors do first-year students at community colleges report as most influential in their decision to withdraw before completing their first semester? |
How to Narrow a Broad Topic Into a Research Question
Most research starts with a topic, not a question. Converting a topic into a strong question requires narrowing along four dimensions:
The four narrowing dimensions
Example of the narrowing process:
Topic: "Immigration and employment"
After applying the four dimensions:
- Population: undocumented immigrants with college degrees
- Phenomenon: barriers to professional employment
- Context: in the United States since 2012 (DACA implementation)
- Variable: types of employment barriers described
Resulting research question: "What employment barriers do DACA recipients with bachelor's degrees report encountering when seeking professional-level positions?"
This question is answerable with qualitative interviews, narrow enough to be completable, and broad enough to produce findings that matter beyond a single case.
Research Questions by Discipline: A Quick Reference
| Discipline | Example research question |
|---|---|
| Psychology | How does adverse childhood experience (ACE) score correlate with rates of anxiety disorders in adults aged 30 to 45? |
| Education | How do elementary teachers in Title I schools describe the barriers to implementing differentiated instruction? |
| Sociology | What factors predict whether adults who grew up in poverty will achieve middle-income status by age 40? |
| Public health | How does the density of fast-food restaurants within walking distance of a school correlate with student BMI distributions? |
| Political science | How do campaign contribution levels from industry PACs correlate with legislators' voting records on related regulatory bills? |
| Economics | How does the implementation of paid family leave policies affect women's labor force participation rates in the five years after childbirth? |
| Computer science | How does the latency of AI-generated code suggestions affect developer productivity on unfamiliar codebases? |
| Nursing / clinical | What hand hygiene compliance rates exist among ICU staff before and after an electronic monitoring system was introduced? |
| Environmental science | How have wildfire frequency and acreage in the western US changed over the past 40 years relative to annual precipitation levels? |
| Business | How does supplier concentration affect supply chain resilience for mid-sized manufacturers during demand shocks? |
Frequently Asked Questions
What are the 4 types of research questions? The four main types are descriptive (what exists or what is the pattern), comparative (how do groups or conditions differ), causal (does X cause or influence Y), and exploratory (what are the dimensions or meanings of a phenomenon). Some frameworks also distinguish relational questions (what is the relationship between X and Y) as a fifth category, though many treat these as a subtype of comparative or causal.
What are examples of good research questions? Good research questions are specific, answerable within a realistic study design, and significant to the field. Examples: "How do patient recovery times differ between traditional and accelerated post-surgical care?" (comparative); "To what extent does a daily mindfulness practice reduce stress scores in corporate employees?" (causal); "How do first-generation students describe their sense of belonging during their first semester?" (exploratory). Each of these specifies a population, a phenomenon, and an outcome or dimension.
How do I write a research question? Start with a broad topic, then narrow it by specifying: which population, which aspect of the topic, in what context or time period, and what variable or outcome you are measuring. Then choose your question type: if you want to document, use descriptive; if you want to compare groups, use comparative; if you want to explain cause and effect, use causal; if you want to explore an unknown, use exploratory. Check that the question is answerable with the methods and resources you have.
What makes a research question too broad? A question is too broad when it does not specify who, what aspect, in what context, or what you are measuring. "Does education matter?" is too broad because "education" could mean anything and "matter" is unmeasured. "How does completing a vocational certification program affect 5-year earnings for adults who were unemployed at enrollment?" is specific, measurable, and answerable with a defined dataset.
What is the difference between a research question and a hypothesis? A research question is an open question your study will answer. A hypothesis is a prediction about what you expect the answer to be, typically in the form of a statement: "Adults who participate in a 12-week mindfulness program will report lower stress scores than a waitlist control group." Quantitative and experimental studies often have formal hypotheses; qualitative and exploratory studies typically state research questions instead.
For more on structuring the research that follows from your question, see how to write a literature review, how to write a dissertation proposal, and how to write an abstract.
Amos Oppong
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