So sánh phương pháp

	Nhật ký Nghiên cứu Tam giác hóa	Bộ sưu tập tài liệu tam giác hóa
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1970s–1980s (triangulation formalized by Denzin 1978; diary methodology developed through 1980s)	1978 (triangulation); 2009 (document analysis as method)
Người khởi xướng	Norman K. Denzin (triangulation framework); Mary Louise Holly (research diary practice)	Norman K. Denzin (triangulation principle); Glenn Bowen (document analysis formalization)
Loại	Qualitative data collection technique	Qualitative/mixed-methods data collection strategy
Công trình gốc	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.
Tên gọi khác	reflective diary triangulation, multi-method research journal, triangulated reflexive diary, diary-based triangulation	documentary triangulation, multi-source document collection, cross-source document analysis, data triangulation via documents
Liên quan	6	4
Tóm tắt	A Triangulated Research Diary is a qualitative data collection approach in which a researcher's ongoing reflective diary is used as one strand within a triangulated data collection strategy. The diary records observations, decisions, emotions, and emerging interpretations across the study, while at least one other data source — such as interviews, documents, or observations — is collected in parallel. Cross-checking diary entries against other sources increases the credibility and depth of the findings.	Triangulated document collection is a qualitative data collection strategy in which documents from multiple independent sources are gathered and cross-checked against one another. By drawing on different document types — such as official records, personal archives, institutional reports, and media artifacts — the researcher reduces reliance on any single source and strengthens the credibility of the evidence base. The approach applies Denzin's data triangulation principle directly to documentary material.