手法を比較

	デジタル会話分析	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	1974 (CA foundations); 1990s–2000s (digital adaptation)	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Harvey Sacks, Emanuel Schegloff, Gail Jefferson (CA foundations); Susan Herring (computer-mediated discourse adaptation)	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Qualitative discourse analysis method	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	DCA, online conversation analysis, digital CA, computer-mediated conversation analysis	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	5	6
概要	Digital Conversation Analysis (DCA) applies the systematic, turn-by-turn analytical procedures of Conversation Analysis (CA) to digital and computer-mediated interactions — including chat logs, social media threads, instant messages, and online forums. Rooted in the foundational CA framework of Sacks, Schegloff, and Jefferson, DCA adapts classical concepts such as turn-taking, adjacency pairs, and sequential organisation to account for the asynchronous, multimodal, and textual character of online communication.	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.