In-depth Interview

In-depth interview, is a qualitative data collection technique aimed at understanding individuals’ life experiences, belief systems, and perceptions of social reality through their own narratives. This method can be applied in an unstructured or semi-structured format and establishes a dialogic interaction between the researcher and the participant. In-depth interviews, which seek to access subjective layers of meaning inaccessible through quantitative methods, are particularly significant for analyzing how social phenomena are experienced at the individual level. The theoretical foundations of this method rest on intellectual traditions such as phenomenology, symbolic interactionism, interpretive sociology, and critical theory. In the social sciences, it has become an indispensable tool for producing contextual and multi-layered knowledge.

An interview (in-depth interview) is a qualitative research method designed to understand how individuals experience the social world, how they assign meaning to these experiences, and how they construct their identities. These interviews, conducted face-to-face or online, can be implemented in unstructured or semi-structured formats. The method approaches social phenomena through subjective interpretations, enabling data to yield in-depth meaning analyses rather than quantitative generalizations.

Epistemologically, approaches such as phenomenology, interpretive sociology, symbolic interactionism, and critical theory form the theoretical backdrop of this method. In-depth interviewing assumes that social reality is constructed within individuals’ linguistic, cultural, and historical positioning. Particularly post-structuralist thought, feminist epistemology, and critical theory have enriched this method with new dimensions.^【1】

The method became systematic in the early 20th century through the urban ethnographic studies of the Chicago School sociologists, gaining a methodological foundation especially through the work of Clifford Shaw, Howard Becker, and Everett Hughes. Steinar Kvale’s contributions framed in-depth interviewing as “a process of knowledge production,” providing a methodological and philosophical framework for its development.^【2】

In-depth interviews are used across numerous disciplines including sociology, anthropology, education, health, media, and political science. The implementation process requires careful planning. Researchers typically construct their sample through purposive sampling or the snowball technique. The prepared interview guide contains thematic, open-ended questions. Interviews are recorded with participant consent, either audio or video, and subsequently transcribed in full. During analysis, qualitative coding, thematic analysis, or discourse analysis are employed.

The analysis process demands the same high level of methodological rigor as data generation. Researchers must continuously reflect on how their own assumptions influence the data through a reflexive stance. Respect for participant confidentiality, informed consent procedures, and ethical sensitivity toward potential emotional tensions during interviews are among the core ethical principles of this method.

In-depth interviewing enables the contextual understanding of individual experiences and the analysis of social structures through the lens of everyday life. In this regard, it provides a vital foundation for theory generation. Allowing the participant’s narrative to emerge spontaneously, without direction, ensures authenticity. However, this freedom also carries the risk of the researcher’s interpretation becoming overly subjective.

The primary limitation of this method is that the data obtained is context-specific to a limited sample and has low generalizability. Moreover, the interview process, transcription, and analysis stages are time-intensive and labor-demanding. Simultaneously, researchers must safeguard their own psychological boundaries when conducting interviews on emotionally taxing topics.^【3】