手法を比較

	長期的民族誌研究	Grounded Theory
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	1920s (classical origins); refined 1990s–2000s	1967
提唱者	Rooted in classical anthropological fieldwork (Malinowski, 1922); systematised for sociological revisits by Michael Burawoy (2003)	Barney Glaser and Anselm Strauss
種類	Qualitative research design	Method
原典	Burawoy, M. (2003). Revisits: An outline of a theory of reflexive ethnography. American Sociological Review, 68(5), 645–679.	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
別名	extended ethnography, long-term fieldwork, sustained ethnographic study, longitudinal field research	GT, Grounded Theory Approach
関連	5	3
概要	Longitudinal ethnography is a qualitative research design in which a researcher conducts sustained, repeated fieldwork with the same community, organisation, or group across an extended period — months to decades. By returning to the field at multiple time points, the researcher captures how social processes, meanings, and structures evolve, making it the only qualitative method capable of directly observing change and continuity in lived experience.	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.