The nature and purpose of social research
Department of Social Sciences, SWPS University
June 22, 2026
| Qualitative | Quantitative | |
|---|---|---|
| Data | Words, images, meanings | Numbers, measurements |
| Logic | Inductive — builds theory | Deductive — tests theory |
| Samples | Small, purposively chosen | Large, ideally representative |
| Methods | Interviews, focus groups, ethnography | Surveys, experiments, statistics |
| Strength | Depth, context, discovery | Breadth, comparison, generalisation |
Mixed methods combine the two — for example, interviews to design a better survey, or a survey to find cases for in-depth study.
We will follow one question through these stages: why do young people vote less than older people?
Running example: “Why do young people vote less?” is relevant (turnout is falling), feasible (survey data exist), and ethically low-risk.
Running example: we sharpen the topic into a testable question — does political interest explain the age gap in turnout?
Running example: we operationalise voting as turnout in the last national election, and interest as a 0–10 self-rating.
Running example: our population is all eligible voters; a random sample of 1,500 lets us compare turnout across age groups.
Running example: a structured survey is the natural fit — it reaches a large, representative sample with standardised questions.
Running example: we compare turnout across age bands, then use regression to ask whether political interest accounts for the gap.
Running example: a clear bar chart of turnout by age, with one sentence on what it means for the original question.
Running example: self-reported turnout is usually over-stated — a limitation to flag, and a prompt to validate against official records.
Introduction to Social Research Methodology