手法を比較

	固有事例研究	アクションリサーチ	エスノグラフィー
分野	質的手法	質的研究	質的手法
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1995	1946	c. 1922 (Malinowski's Argonauts of the Western Pacific)
提唱者	Robert E. Stake	Kurt Lewin; expanded by Kemmis, McTaggart, Reason & Bradbury	Bronisław Malinowski (modern ethnography); rooted in 19th-century anthropology
種類	Qualitative research method	Method	Qualitative fieldwork tradition
原典	Stake, R. E. (1995). The Art of Case Study Research. Sage Publications. ISBN: 978-0803957671	Lewin, K. (1946). Action research and minority problems. Journal of Social Issues, 2(4), 34–46.	Hammersley, M. & Atkinson, P. (2019). Ethnography: Principles in Practice (4th ed.). Routledge. ISBN: 978-1138504462
別名	intrinsic case research, bounded case study, particularistic case inquiry, single intrinsic case	Participatory Action Research, PAR, Collaborative Inquiry	Etnografi, participant observation, fieldwork, ethnographic research
関連	6	1	5
概要	Intrinsic case study is a qualitative research method developed by Robert E. Stake in which a single, bounded case is studied in depth for its own inherent interest — not to illustrate a theory or to generalize, but because the case itself is unusual, revealing, or otherwise worthy of close attention. The researcher seeks a thick, holistic understanding of the particular: its context, its actors, its processes, and what makes it distinctively what it is.	Action research is a collaborative research methodology in which researchers work with practitioners and community members to investigate a problem, implement change, and evaluate outcomes, cycling through reflection, action, and learning. Developed by Kurt Lewin (1946), action research bridges research and practice, aiming simultaneously to produce knowledge and practical improvement.	Ethnography is a qualitative research tradition in which a researcher immerses themselves in a social group or community over an extended period — typically three to six months or longer — to study its culture, values, and behaviours in their natural setting. Originating in social and cultural anthropology, and consolidated as a rigorous method by Bronisław Malinowski in the early twentieth century, ethnography produces rich, contextualised accounts of how people live, work, and make meaning together.