手法を比較

	記述的現象学	談話分析	Grounded Theory
分野	質的手法	質的研究	質的研究
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1970s–1985 (systematised by Giorgi; refined 2009)	1989 (Fairclough); 1987 (Potter & Wetherell)	1967
提唱者	Amedeo Giorgi (adapting Edmund Husserl's transcendental phenomenology)	Norman Fairclough; Jonathan Potter and Margaret Wetherell	Barney Glaser and Anselm Strauss
種類	Qualitative research method	Method	Method
原典	Giorgi, A. (2009). The Descriptive Phenomenological Method in Psychology: A Modified Husserlian Approach. Duquesne University Press. ISBN: 978-0820703992	Fairclough, N. (1989). Language and power. Longman.	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
別名	Giorgi method, empirical phenomenology, scientific phenomenology, Husserlian descriptive phenomenology	DA, Critical Discourse Analysis, Discursive Analysis	GT, Grounded Theory Approach
関連	6	2	3
概要	Descriptive Phenomenology, systematised by Amedeo Giorgi at Duquesne University, is a rigorous qualitative method for uncovering the general psychological structure of a lived experience. Drawing directly on Husserl's transcendental phenomenology, Giorgi's four-step procedure — epoché, whole reading, meaning-unit discrimination, and transformation into disciplinary language — produces a stable, replicable description of what makes an experience essentially what it is, without theoretical interpretation or causal explanation.	Discourse analysis is a qualitative research methodology that examines how language, communication, and power shape meaning, identity, and social reality. Developed across linguistics, sociology, and psychology (particularly by Norman Fairclough and Jonathan Potter), discourse analysis goes beyond content to analyze language use as a social practice that constitutes and reflects power relations, ideologies, and social structures.	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.