手法を比較

	詳細インタビュー	Grounded Theory
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	Mid-20th century (formalised in qualitative social research from the 1950s onward)	1967
提唱者	Rooted in sociological interviewing traditions; systematised by researchers including Steinar Kvale and Herbert J. Rubin	Barney Glaser and Anselm Strauss
種類	Qualitative research method	Method
原典	Kvale, S. (1996). InterViews: An Introduction to Qualitative Research Interviewing. Sage. ISBN: 978-0803958203	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
別名	IDI, semi-structured interview, unstructured interview, qualitative interview	GT, Grounded Theory Approach
関連	6	3
概要	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.	Grounded Theory (GT) is a systematic qualitative research methodology in which theory emerges directly from data through iterative analysis, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss in 1967, GT prioritizes generating explanatory frameworks grounded in evidence.