手法を比較

	文書収集	談話分析	Thematic Analysis
分野	調査方法論	質的研究	質的研究
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	19th–20th century historical methods; contemporary social-science codification c. 2000s	1989 (Fairclough); 1987 (Potter & Wetherell)	2006
提唱者	Rooted in historical and social science traditions; systematized by Lindsay Prior and Glenn Bowen	Norman Fairclough; Jonathan Potter and Margaret Wetherell	Virginia Braun and Victoria Clarke
種類	Qualitative / mixed data-collection technique	Method	Method
原典	Bowen, G. A. (2009). Document analysis as a qualitative research method. Qualitative Research Journal, 9(2), 27–40.	Fairclough, N. (1989). Language and power. Longman.	Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101.
別名	document analysis, documentary method, document review, secondary document analysis	DA, Critical Discourse Analysis, Discursive Analysis	TA, Reflexive Thematic Analysis
関連	3	2	3
概要	Document collection is a systematic data-collection technique in which the researcher gathers and reviews existing written, visual, or digital records — such as reports, meeting minutes, policies, letters, photographs, or institutional records — as primary or supplementary evidence. It is widely used in qualitative, historical, and mixed-methods research and can stand alone or complement interviews and observation.	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.	Thematic Analysis (TA) is a qualitative research methodology for identifying, analyzing, and reporting patterns (themes) in qualitative data. Developed systematically by Virginia Braun and Victoria Clarke (2006), TA is flexible and accessible, applicable across diverse theoretical frameworks and data types, making it one of the most widely used qualitative methods in psychology, health research, and social sciences.