手法を比較

	フィールドベースグラウンデッド・セオリー	ケーススタディリサーチ（Case Study Research）	Grounded Theory
分野	質的手法	質的手法	質的研究
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1967 (original GT); field-based variant developed through 1980s–2000s	1984 (seminal codification)	1967
提唱者	Kathy Charmaz (constructivist extension); Barney Glaser & Anselm Strauss (original grounded theory)	Robert K. Yin (systematised in Case Study Research, 1984)	Barney Glaser and Anselm Strauss
種類	Qualitative research design and analysis approach	Qualitative research design	Method
原典	Charmaz, K. (2006). Constructing Grounded Theory: A Practical Guide through Qualitative Analysis. Sage. ISBN: 978-0761973539	Yin, R.K. (2018). Case Study Research and Applications: Design and Methods (6th ed.). Sage. ISBN: 978-1506336169	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
別名	constructivist grounded theory, ethnographic grounded theory, situational grounded theory, field grounded theory	Vaka Çalışması (Case Study), case study design, case study methodology	GT, Grounded Theory Approach
関連	6	5	3
概要	Field-based grounded theory integrates sustained fieldwork — participant observation, field notes, and naturalistic data collection — with the iterative coding and theoretical sampling procedures of classic grounded theory. Where standard grounded theory typically relies on interview transcripts, the field-based variant anchors theory generation in direct, prolonged observation of naturally occurring social processes in context. The result is a substantive theory that is grounded in both what people say and what they actually do in their everyday settings.	Case study research is a qualitative research design that investigates a specific phenomenon, individual, group, organisation, or event in depth within its real-world context. Systematised by Robert K. Yin in 1984, it supports single-case and multiple-case designs and draws on multiple data sources — interviews, observation, documents, and artefacts — to build a rich, contextualised account of a bounded unit.	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.