手法を比較

	トライアンギュレーションされた文書収集	構造化面接における三角測量法
分野	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline
提唱年	1978 (triangulation); 2009 (document analysis as method)	1978 (Denzin's triangulation framework); structured interviews in use from early 20th century
提唱者	Norman K. Denzin (triangulation principle); Glenn Bowen (document analysis formalization)	Norman K. Denzin (triangulation framework); structured interview tradition predates
種類	Qualitative/mixed-methods data collection strategy	Triangulated quantitative/qualitative data collection technique
原典	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.
別名	documentary triangulation, multi-source document collection, cross-source document analysis, data triangulation via documents	triangulated standardized interview, multi-source structured interview, cross-validated structured interview
関連	4	3
概要	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.	A triangulated structured interview applies the triangulation principle — using multiple independent sources, methods, or perspectives to cross-validate findings — to the structured interview format. The researcher administers the same fixed set of questions across different respondent groups, time points, or complementary data sources, then systematically compares the results to confirm, qualify, or explain discrepancies. This strengthens confidence in the accuracy of the data beyond what any single structured interview session could provide.