So sánh phương pháp

	Phân tích tài liệu theo chiều dọc	Phân tích tài liệu
Lĩnh vực	Định tính	Nghiên cứu định tính
Họ	Process / pipeline	Process / pipeline
Năm ra đời	2003–2009 (formalized in qualitative research methodology)	1920
Người khởi xướng	Glenn A. Bowen (document analysis framework); Johnny Saldaña (longitudinal qualitative methods)	Max Weber and Karl Mannheim
Loại	Qualitative longitudinal research design	Method
Công trình gốc	Bowen, G. A. (2009). Document analysis as a qualitative research method. Qualitative Research Journal, 9(2), 27–40.	Scott, J. (1990). A Matter of Record: Documentary Sources in Social Research. Polity Press. ISBN: 978-0745608419
Tên gọi khác	longitudinal documentary research, longitudinal archival analysis, repeated document analysis, LDA	documentary analysis, textual analysis, content analysis of documents, archival research
Liên quan	3	4
Tóm tắt	Longitudinal document analysis is a qualitative research approach that systematically collects and analyzes documents at multiple time points to trace how phenomena, discourses, policies, or organizational practices change over time. By treating documents as primary data sources rather than supplementary evidence, researchers can reconstruct temporal trajectories, identify turning points, and understand how meaning evolves across extended periods without requiring direct participant contact.	Document analysis is a systematic qualitative research method for examining written, visual, or audiovisual sources—such as policy documents, historical records, organizational records, media reports, emails, social media posts, photographs, or videos—to extract meaning, identify patterns, and understand social phenomena. Developed by Weber and Mannheim in early 20th-century sociology, the method bridges historical research, content analysis, and textual interpretation. Document analysis is used across disciplines to understand organizational change, policy evolution, media representation, historical events, and cultural meaning. Documents provide evidence of what organizations, institutions, or societies value, decide, and communicate, often revealing contradictions between policy and practice.