手法を比較

	複数の事例に基づく批判的談話分析	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	1990s–2000s (CDA foundations ~1989–1995; multiple case integration in applied discourse research)	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Norman Fairclough (CDA); Robert K. Yin (multiple case design)	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Qualitative research design and analytic method	Qualitative research method
原典	Fairclough, N. (1995). Critical Discourse Analysis: The Critical Study of Language. Longman. ISBN: 978-0582219526	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
別名	multi-case CDA, comparative critical discourse analysis, cross-case CDA, multiple case CDA	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	5	6
概要	Multiple case-based critical discourse analysis (multi-case CDA) combines the comparative logic of multiple case study design with the ideological and power-focused analytic apparatus of critical discourse analysis. The researcher selects two or more purposefully chosen cases, collects relevant texts or spoken discourse within each, applies CDA to reveal how language constructs power relations and ideologies within each case, and then synthesises findings across cases to identify patterns, contrasts, and broader sociocritical insights that a single-case design could not yield.	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.