手法を比較

	クリティカル単一事例研究	批判的談話分析
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1984 (Yin's foundational text); critical framing developed through 1990s–2000s	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Robert K. Yin (case study design); Bent Flyvbjerg (critical case logic); critical theory influence from Max Horkheimer and Frankfurt School	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Qualitative research design	Qualitative research method
原典	Flyvbjerg, B. (2006). Five misunderstandings about case-study research. Qualitative Inquiry, 12(2), 219–245.	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
別名	critical case study, critical-theory case study, single critical case, CSCS	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	4	6
概要	A critical single case study is a qualitative research design that investigates one bounded, strategically selected case through a critical-theory lens, aiming not only to understand the case in depth but also to expose underlying power relations, structural inequalities, or ideological conditions that shape the phenomenon. It combines the analytic depth of single-case inquiry with the emancipatory agenda of critical social science.	Critical Discourse Analysis (CDA) is a qualitative method that examines how language in texts and talk constructs, sustains, and challenges relations of power, ideology, and social inequality. Drawing on linguistics, social theory, and critical philosophy, CDA treats discourse not merely as communication but as social practice — a site where dominance is reproduced and where resistance can be articulated. Developed in the late twentieth century by Norman Fairclough, Teun van Dijk, and Ruth Wodak, among others, CDA is applied to political speeches, media texts, policy documents, educational materials, and institutional interactions.