Breaking down the question
The key word is epistemological. The question is not asking what qualitative methods are, nor for a list of their merits and demerits; it asks for the theory of knowledge on which they rest. Epistemology concerns what counts as valid knowledge and how it is obtained, so the answer must reach beneath technique to the philosophical assumptions that justify studying society qualitatively.
The verb examine invites both exposition and a measure of appraisal. A strong answer identifies the interpretivist and constructionist foundations, contrasts them with the positivist epistemology behind quantitative methods, and briefly weighs their adequacy. The frequent slip is to describe interviews and ethnography rather than the epistemology underlying them.
How to approach it
Anchor the answer in the broader account of research methods in sociology and immediately name the relevant epistemologies — interpretivism and social constructionism — as against positivism. Set out each foundational assumption: that social reality is meaningful, that knowledge is constructed and context-bound, that understanding proceeds inductively, and that the researcher is a reflexive participant. Given ten marks, be compact, and close with a short evaluative judgement.
Model answer
Qualitative methods — ethnography, participant observation, in-depth interviews, life histories, the analysis of documents and discourse — are not merely a set of techniques but the expression of a distinctive epistemology, a particular view of what social knowledge is and how it may be gained. Examining that foundation means going beneath the methods to their theory of knowledge.
Interpretivism. The primary foundation is interpretivism, descending from Dilthey, Weber and Schutz. Its premise is that the social world differs in kind from the natural world because it is constituted by meaning: human beings act on the basis of the interpretations they place on situations. Valid social knowledge therefore consists in understanding (Verstehen) those meanings from the actor's standpoint, not in the external measurement of behaviour. Knowledge is of meanings, and meanings are grasped through interpretation.
Social constructionism. A second foundation is the view that social reality is not a fixed, external object but is constructed through interaction, language and shared definitions. Categories such as deviance, gender or illness are produced and sustained socially. Knowledge, on this view, is always situated and context-bound; there are no timeless social laws to be read off, only meanings to be reconstructed in their setting. This underwrites the qualitative concern with depth, context and the particular case.
Inductive and grounded reasoning. Epistemologically, qualitative research typically works from the ground up. Rather than testing a hypothesis deduced in advance, the researcher builds concepts and theory out of close engagement with the data — the logic of grounded theory. Knowledge emerges from immersion, so the design remains flexible and the categories are those of the researched, not imposed from outside.
Reflexivity and the rejection of naive objectivity. Because the researcher is a member of the social world being studied and interprets it through their own concepts, qualitative epistemology abandons the positivist ideal of a detached observer mirroring facts. Objectivity is replaced by reflexivity: the disciplined acknowledgement of the researcher's position and its effect on the knowledge produced. Validity is sought through authenticity, thick description and closeness to lived experience rather than through statistical representativeness.
Contrast with positivism. These foundations stand opposed to the positivist epistemology behind quantitative methods, which assumes an external, law-governed reality knowable through detached, empirical measurement. Where positivism seeks explanation, generalisation and causal law, qualitative epistemology seeks understanding, meaning and depth.
Assessment. The strength of these foundations is that they take seriously what is distinctive about human society — its meaningful, constructed, interpreted character — which a purely quantitative epistemology neglects. Their weakness is the difficulty of establishing reliability, replicability and generalisation, and the risk that interpretation slides into the researcher's own construction. This is why many sociologists favour epistemological pluralism, combining the understanding qualitative methods yield with the breadth quantitative methods provide.
Examiner's perspective
The discriminator here is whether the candidate answers the epistemological question rather than describing qualitative techniques. Scripts that narrate how to conduct an interview miss the point; those that name interpretivism, constructionism, inductive reasoning and reflexivity, and explain how each justifies qualitative enquiry, score well.
Examiners value a clear contrast with positivist epistemology and correct use of terms such as Verstehen, thick description and grounded theory. At ten marks a compact, well-organised answer with a brief evaluative close — noting the trade-off between depth and generalisation and the case for pluralism — reaches the top band more surely than an over-long description.