手法を比較

	比較談話分析	比較テーマ分析
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (established as comparative practice through the 1990s)	2000s–2010s (as an explicit comparative variant of thematic analysis)
提唱者	Norman Fairclough; Ruth Wodak; Teun A. van Dijk	Virginia Braun & Victoria Clarke (thematic analysis foundation); comparative extension developed in applied policy and cross-cultural qualitative research traditions
種類	Qualitative comparative research approach	Qualitative comparative analytical strategy
原典	Fairclough, N. (1995). Critical Discourse Analysis: The Critical Study of Language. Longman. ISBN: 978-0582219526	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	CDA comparative, cross-context discourse analysis, comparative text analysis, multi-site discourse analysis	cross-group thematic analysis, comparative TA, multi-group thematic analysis, comparative qualitative thematic analysis
関連	5	6
概要	Comparative discourse analysis examines how language constructs meaning, identity, and power by systematically contrasting texts or speech acts drawn from at least two distinct contexts, groups, time periods, or institutions. By holding analytical categories constant across cases, it reveals how discursive patterns diverge or converge, producing insights that single-context discourse analysis cannot generate.	Comparative Thematic Analysis applies the structured procedures of thematic analysis across two or more distinct groups, sites, or time points, with the explicit aim of identifying both shared patterns and meaningful differences. Rather than producing a single composite account of experience, it yields a layered analysis that maps where themes converge and diverge across comparison units — making it especially valuable for policy-relevant, cross-cultural, or multi-site qualitative studies.