手法を比較

	Longitudinal Critical Discourse Analysis	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	1990s–2000s (CDA foundations ~1989–1992; longitudinal applications consolidated through 2000s)	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Norman Fairclough; Ruth Wodak	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Qualitative longitudinal discourse design	Qualitative research method
原典	Fairclough, N. (1992). Discourse and Social Change. Polity Press. ISBN: 978-0745612690	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
別名	Longitudinal CDA, diachronic critical discourse analysis, longitudinal discourse study, temporal CDA	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	6	6
概要	Longitudinal Critical Discourse Analysis (LCDA) combines the critical discourse analysis tradition — which examines how language constructs and reproduces power, ideology, and social inequality — with a longitudinal design that collects and compares texts at multiple time points. By tracking discursive change over time, LCDA reveals how ideological representations, social identities, and power relations shift, stabilise, or are contested across different historical or political periods.	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.