How do sociologists know what they know about inequality? This section of the course — Research Methods and Researching Social Inequalities — helps you find out. You’ll explore how sociologists design studies, gather data, and link their research choices to theory. You’ll also think critically about the practical, ethical, and theoretical challenges of investigating issues like class, gender, ethnicity, and age inequality.
1. The Relationship Between Theory and Methods
Every sociological study begins with an idea about how society works — a theoretical perspective. This theory shapes which methods researchers use and how they interpret data. Two key traditions guide most sociological research: Positivism and Interpretivism.

Positivism — Measuring Society
Positivists see sociology as a science. They want to study society in the same way scientists study the natural world: through measurement, patterns, and objectivity.
Key ideas:
- Patterns and trends: Positivists look for general laws about how society functions — for example, links between class and education.
- Objectivity and value freedom: Researchers should remain detached and unbiased.
- Quantitative data: They favour numerical data — surveys, official statistics, or large-scale questionnaires.
Positivist studies of inequality might analyse patterns in exam results, crime rates, or employment statistics to uncover large-scale social trends.
Interpretivism — Understanding Meanings
Interpretivists argue that society can’t be studied like a science because people aren’t predictable objects — they think, feel, and interpret the world.
Key ideas:
- Meanings and experiences: The goal is to understand how people make sense of their lives.
- Verstehen and empathy: Researchers try to see the world from participants’ viewpoints.
- Rapport and subjectivity: Building trust helps reveal deeper insights.
- Reflexivity: Researchers reflect on their own role and influence.
- Qualitative data: Data from interviews, observations, or ethnography provides detail and meaning.
Interpretivists researching inequality might explore how working-class students experience school, or how ethnic minority groups perceive discrimination.
Evaluating Research Using Key Concepts
To judge how effective a study is, sociologists use four key concepts:
- Validity: Does the research truly capture what it claims to study?
- Reliability: Would the same results appear if the study were repeated?
- Representativeness: Does the sample reflect the wider population?
- Generalisability: Can the findings be applied to other groups or settings?
In exams, you’ll use these terms to evaluate the strengths and limitations of different methods and theoretical approaches.
2. The Main Stages of the Research Process
Research isn’t just about collecting data — it’s a carefully planned process with multiple stages.
The Research Process Step-by-Step
- Choosing a topic: Influenced by personal interests, social issues, funding, and access.
- Aims, hypotheses, and questions: These set out what the researcher hopes to discover or test.
- Primary and secondary data: Sociologists may collect their own data or use existing sources.
- Operationalisation: Turning abstract ideas like “inequality” or “status” into something measurable.
- Pilot studies: Small-scale trials to test research tools before the main study.
- Data collection: Using the chosen method(s).
- Respondent validation: Checking that participants agree the findings reflect their views.
- Longitudinal studies: Repeating research over time to see social change.
- Interpretation of data: Analysing what the findings reveal about social life.
- Link to social policy: Considering how research might influence government or organisational decisions.
3. Sampling and Access
No study can include everyone, so researchers choose a sample that represents (or purposely focuses on) certain groups.

Sampling Techniques
- Random, systematic, stratified: Aim for representativeness and generalisability.
- Snowball, volunteer, opportunity, purposive, quota: Often used in qualitative or small-scale studies, where access is difficult.
Each technique has advantages and disadvantages, depending on whether the research prioritises breadth (positivist) or depth (interpretivist).
Access and Gatekeeping

Sometimes groups are hard to reach — for instance, prisoners, CEOs, or vulnerable communities. Researchers often need gatekeepers (like teachers, managers, or community leaders) to gain access. How easily access is granted can shape the study’s success.
Ethics

Sociological research must follow the British Sociological Association’s ethical guidelines, ensuring participants are treated respectfully and safely. Key principles include:
- Informed consent — participants know what the study involves.
- Confidentiality — information is protected.
- Protection from harm — emotional or physical well-being is safeguarded.
- Honesty and integrity — researchers must not mislead or exploit participants.
Ethics are especially important when studying inequality, since research often involves people experiencing disadvantage or exclusion.
4. Methods Used in Sociological Research
You’ll explore a wide range of research methods — each offering different strengths for studying social inequalities.
Quantitative Methods (Positivist)
- Questionnaires and structured interviews — produce measurable, comparable data.
- Statistical data — official (e.g., census data) or non-official (e.g., charity reports).
- Content analysis — quantifies media or text content to find trends.
These methods are reliable and generalizable, but sometimes lack validity and depth.
Qualitative Methods (Interpretivist)
- Unstructured and semi-structured interviews — reveal personal experiences and meanings.
- Observations (participant or non-participant, covert or overt) — allow researchers to see real-world behaviour.
- Ethnography — long-term immersion in a community or group.
These methods are valid and rich in detail, but can be less reliable and harder to replicate.
Mixed Methods
Modern sociology often blends both traditions:
- Triangulation: Using multiple methods to cross-check findings.
- Methodological pluralism: Combining qualitative and quantitative approaches to balance depth and breadth.
For example, a researcher might use a national survey to find income patterns (quantitative), then conduct interviews to explore how those inequalities feel in everyday life (qualitative).
5. Applying Methods to Social Inequality

The real skill is applying all this knowledge to researching inequality. You’ll consider:
- Which methods are best for exploring class, gender, ethnicity, or age inequalities?
- What practical problems arise when researching powerful or vulnerable groups?
- How can data about inequality influence social policy and social change?
For instance, government reports on the gender pay gap rely on positivist quantitative data, while feminist researchers might use qualitative interviews to explore women’s lived experiences in the workplace.
6. Key Takeaways for Success
By the end of this section, you should be able to:
✅ Explain how theory (positivism and interpretivism) shapes research methods.
✅ Understand and evaluate each stage of the research process.
✅ Describe and assess sampling techniques and ethical issues.
✅ Compare and contrast qualitative and quantitative approaches.
✅ Apply methods knowledge to the context of social inequalities.
Why It Matters
Understanding research methods turns you from a reader of sociological findings into a critical thinker about how that knowledge is produced. It’s about seeing how statistics, interviews, and case studies all connect to bigger questions: How do we know what inequality looks like? And who gets to define it?