手法を比較

	Multiple Case-Based Conversation Analysis	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	CA founded ~1960s–1970s; multi-case extension adopted from late 1990s onward	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Harvey Sacks, Emanuel Schegloff, Gail Jefferson (CA); multiple-case design from Robert Yin	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Qualitative multi-case analytic design	Qualitative research method
原典	Sacks, H., Schegloff, E. A., & Jefferson, G. (1974). A simplest systematics for the organization of turn-taking for conversation. Language, 50(4), 696–735.	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
別名	multi-case CA, cross-case conversation analysis, comparative conversation analysis, multiple-instance CA	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	5	6
概要	Multiple case-based conversation analysis applies the fine-grained sequential methods of Conversation Analysis (CA) across two or more distinct cases — settings, groups, or interactions — to identify both case-specific patterns and cross-case regularities in naturally occurring talk. By examining how participants organise turn-taking, repair, and action sequences in multiple contexts, the approach strengthens claims about interactional phenomena beyond what a single-case study can establish.	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.