手法を比較

	比較文書分析	比較談話分析
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	Mid-to-late 20th century; consolidated as explicit qualitative method by 2000s	1980s–1990s (established as comparative practice through the 1990s)
提唱者	Rooted in historical and social science documentary methods; systematised by scholars such as Lindsay Prior and Glenn Bowen	Norman Fairclough; Ruth Wodak; Teun A. van Dijk
種類	Qualitative comparative research design	Qualitative comparative research approach
原典	Bowen, G. A. (2009). Document analysis as a qualitative research method. Qualitative Research Journal, 9(2), 27–40.	Fairclough, N. (1995). Critical Discourse Analysis: The Critical Study of Language. Longman. ISBN: 978-0582219526
別名	comparative documentary analysis, cross-document analysis, comparative textual analysis, comparative archival analysis	CDA comparative, cross-context discourse analysis, comparative text analysis, multi-site discourse analysis
関連	6	5
概要	Comparative document analysis is a qualitative research design that systematically examines two or more documents — or document sets — side by side to identify similarities, differences, patterns, and contradictions across contexts, institutions, time periods, or jurisdictions. Drawing on document analysis as a primary method, the comparative dimension adds analytical leverage by allowing the researcher to ask not just what a document says, but how and why it differs from comparable documents elsewhere.	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.