手法を比較

	Corpus-Assisted Discourse Studies	批判的談話分析
分野	言語学	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	2004	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Alan Partington and colleagues	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Mixed-methods corpus-and-discourse analytic approach	Qualitative research method
原典	Partington, A., Duguid, A., & Taylor, C. (2013). Patterns and Meanings in Discourse: Theory and Practice in Corpus-Assisted Discourse Studies (CADS). John Benjamins. ISBN: 9789027203885	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
別名	CADS, Corpus-Assisted Discourse Analysis, Corpus-Based Discourse Analysis	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	4	6
概要	Corpus-Assisted Discourse Studies (CADS) is a mixed-methods approach that combines the quantitative power of corpus linguistics with the interpretive depth of discourse analysis to investigate how meanings, evaluations, and ideologies are constructed across large collections of text. Pioneered by Alan Partington and colleagues, CADS uses corpus techniques such as keyness, collocation, and concordancing to identify patterns no analyst could find by reading alone, then 'shunts' back to close qualitative reading to interpret what those patterns mean in their discursive context.	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.