手法を比較

	デジタル文書分析	コンテンツ分析	談話分析
分野	質的手法	質的手法	質的研究
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	2000s onward (grounded in earlier document analysis traditions)	Systematised through Krippendorff's methodology work; 4th edition 2018	1989 (Fairclough); 1987 (Potter & Wetherell)
提唱者	Adapted from traditional document analysis; digital variant developed by qualitative researchers across disciplines (e.g., Bowen 2009; Prior 2003)	Klaus Krippendorff (systematic formulation); roots in early 20th-century communications research	Norman Fairclough; Jonathan Potter and Margaret Wetherell
種類	Qualitative data analysis method	Qualitative / mixed-method research technique	Method
原典	Bowen, G. A. (2009). Document analysis as a qualitative research method. Qualitative Research Journal, 9(2), 27–40.	Krippendorff, K. (2018). Content Analysis: An Introduction to Its Methodology (4th ed.). Sage. ISBN: 978-1506395661	Fairclough, N. (1989). Language and power. Longman.
別名	online document analysis, digital text analysis, e-document analysis, digital archival analysis	İçerik Analizi, systematic content coding, quantitative content analysis	DA, Critical Discourse Analysis, Discursive Analysis
関連	6	5	2
概要	Digital document analysis is a qualitative method for systematically locating, appraising, and interpreting documents that exist in digital or online form — including websites, emails, institutional reports, policy files, social media content, and digital archives. It applies the established logic of document analysis to born-digital and digitised sources, enabling researchers to examine meaning, discourse, and institutional practice embedded in contemporary digital texts without recruiting participants.	Content analysis is a systematic research technique for reducing text, visual, or media material into coded categories so that patterns can be counted, compared, and interpreted. Formalised by Klaus Krippendorff in his widely cited methodology textbook (latest edition 2018), the method sits at the boundary of qualitative and quantitative inquiry: it imposes structured, replicable coding on inherently meaning-laden material.	Discourse analysis is a qualitative research methodology that examines how language, communication, and power shape meaning, identity, and social reality. Developed across linguistics, sociology, and psychology (particularly by Norman Fairclough and Jonathan Potter), discourse analysis goes beyond content to analyze language use as a social practice that constitutes and reflects power relations, ideologies, and social structures.