So sánh phương pháp

	Phỏng vấn sâu 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	1978 (triangulation framework); in-depth interviewing ~1950s onward	1978 (triangulation); 2009 (document analysis as method)
Người khởi xướng	Norman K. Denzin (triangulation framework); in-depth interviewing practice is longstanding in qualitative research	Norman K. Denzin (triangulation principle); Glenn Bowen (document analysis formalization)
Loại	Qualitative data collection approach	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	triangulated IDI, multi-source in-depth interview, triangulated qualitative interview, converging in-depth interview	documentary triangulation, multi-source document collection, cross-source document analysis, data triangulation via documents
Liên quan	4	4
Tóm tắt	Triangulated in-depth interviewing applies Denzin's triangulation logic to the in-depth interview method by deliberately combining multiple sources of convergent evidence — different informants, interviewers, time points, or corroborating data types — to strengthen confidence in qualitative findings. Rather than relying on a single interview account, the researcher gathers rich, open-ended accounts from several vantage points and cross-checks them for consistency and divergence, treating agreement as corroboration and disagreement as analytically meaningful.	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.