手法を比較

	三角測量による非参加観察	トライアンギュレーションされたフィールドノート
分野	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline
提唱年	1958 (observer roles); 1978 (triangulation applied to observation)	1970s–1980s
提唱者	Norman K. Denzin (triangulation framework); Raymond Gold (observer roles taxonomy)	Norman K. Denzin (triangulation); Yvonna Lincoln & Egon Guba (trustworthiness framework)
種類	Qualitative data collection technique	Qualitative data collection and verification 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	triangulated observation, multi-source non-participant observation, observational triangulation, observer triangulation	multi-source field notes, cross-observer field notes, triangulated observation notes, TFN
関連	3	5
概要	Triangulated non-participant observation systematically combines two or more independent non-participant observation streams — using multiple observers, different time points, or distinct vantage points — to cross-validate field records of naturally occurring behaviour. The researcher remains outside the setting as a detached observer, and triangulation across sources reduces single-observer bias while strengthening the credibility of descriptive findings.	Triangulated Field Notes is a qualitative data collection technique in which field notes are recorded independently by multiple observers, from multiple vantage points, or at multiple time points and then systematically compared to strengthen the credibility and completeness of observational data. Rooted in Denzin's triangulation framework and Lincoln and Guba's trustworthiness criteria, the approach counters observer bias by cross-checking accounts before analysis begins.