방법 비교

	다중 출처 심층 면접	심층 면담
분야	조사방법론	질적 방법
계열	Process / pipeline	Process / pipeline
기원 연도	1980s–1990s (formalized in qualitative inquiry literature)	Mid-20th century (formalised in qualitative social research from the 1950s onward)
창시자	Grounded in qualitative traditions consolidated by Patton, Lincoln & Guba, and others	Rooted in sociological interviewing traditions; systematised by researchers including Steinar Kvale and Herbert J. Rubin
유형	Qualitative data collection technique	Qualitative research method
원전	Patton, M. Q. (2002). Qualitative Research and Evaluation Methods (3rd ed.). Sage Publications. ISBN: 978-0761919711	Kvale, S. (1996). InterViews: An Introduction to Qualitative Research Interviewing. Sage. ISBN: 978-0803958203
별칭	multi-informant in-depth interview, multi-perspective qualitative interview, multiple-source IDI, multi-stakeholder in-depth interview	IDI, semi-structured interview, unstructured interview, qualitative interview
관련	5	6
요약	The multi-source in-depth interview is a qualitative data collection strategy in which extended, open-ended interviews are conducted with participants drawn from two or more distinct source groups — such as providers and clients, managers and staff, or experts and laypeople. Collecting data across diverse informant positions enriches description and enables the researcher to examine a phenomenon from multiple vantage points within a single study.	The in-depth interview is a one-to-one qualitative data-collection method in which a researcher engages a participant in an extended, open-ended conversation to elicit rich, detailed accounts of experiences, perceptions, beliefs, or meanings. Unlike structured surveys, the interview guide serves as a flexible road map rather than a fixed script, allowing the researcher to probe unexpected directions as they emerge. The approach is foundational to qualitative inquiry and is used directly as a primary method or as the data-collection arm of phenomenology, grounded theory, narrative analysis, and other frameworks.