手法を比較

	Multiple Case-Based Conversation Analysis	談話分析
分野	質的手法	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	CA founded ~1960s–1970s; multi-case extension adopted from late 1990s onward	1989 (Fairclough); 1987 (Potter & Wetherell)
提唱者	Harvey Sacks, Emanuel Schegloff, Gail Jefferson (CA); multiple-case design from Robert Yin	Norman Fairclough; Jonathan Potter and Margaret Wetherell
種類	Qualitative multi-case analytic design	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. (1989). Language and power. Longman.
別名	multi-case CA, cross-case conversation analysis, comparative conversation analysis, multiple-instance CA	DA, Critical Discourse Analysis, Discursive Analysis
関連	5	2
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.	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.