So sánh phương pháp

	Thu thập tài liệu	Phân tích diễn ngôn
Lĩnh vực	Phương pháp luận khảo sát	Nghiên cứu định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	19th–20th century historical methods; contemporary social-science codification c. 2000s	1989 (Fairclough); 1987 (Potter & Wetherell)
Người khởi xướng	Rooted in historical and social science traditions; systematized by Lindsay Prior and Glenn Bowen	Norman Fairclough; Jonathan Potter and Margaret Wetherell
Loại	Qualitative / mixed data-collection technique	Method
Công trình gốc	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.
Tên gọi khác	document analysis, documentary method, document review, secondary document analysis	DA, Critical Discourse Analysis, Discursive Analysis
Liên quan	3	2
Tóm tắt	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.