手法を比較

	ビジュアル・エリシテーション批判的言説分析	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	2000s–2010s (integration of established traditions)	Late 1970s–1990s (systematised ~1979–1995)
提唱者	Synthesized from Douglas Harper (photo elicitation) and Norman Fairclough (CDA); integrated approach developed across visual and critical discourse scholarship	Norman Fairclough; Teun A. van Dijk; Ruth Wodak
種類	Qualitative research design combining visual elicitation and discourse analysis	Qualitative research method
原典	Harper, D. (2002). Talking about pictures: A case for photo elicitation. Visual Studies, 17(1), 13–26.	Fairclough, N. (1992). Discourse and Social Change. Polity Press.
別名	VECDA, photo-elicitation CDA, visual-elicitation CDA, image-elicitation critical discourse analysis	CDA, Critical Linguistics, Discourse-Historical Approach, Dialectical-Relational Analysis
関連	4	6
概要	Visual Elicitation Critical Discourse Analysis (VECDA) is a qualitative methodology that uses photographs, drawings, or other visual materials as prompts to elicit participant talk, then subjects both the visual artifacts and the resulting discourse to critical discourse analysis (CDA). The approach uncovers how power, ideology, and social structures are reproduced or contested through the interplay of image and language, making it particularly powerful for social justice, health, education, and media research.	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.