手法を比較

	三角日記法	ダイアリー法
分野	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline
提唱年	1977–1978 (seminal formulations); compound approach from 1990s onward	1920s–1940s (systematised by Allport, 1942)
提唱者	Triangulation principle: Norman K. Denzin; Diary method: Donald H. Zimmerman & D. Lawrence Wieder	Gordon Allport (systematic social-science use); Nels Anderson (early fieldwork diaries)
種類	Qualitative/mixed-methods data collection technique	Qualitative / mixed-methods data-collection technique
原典	Denzin, N. K. (1978). The Research Act: A Theoretical Introduction to Sociological Methods (2nd ed.). McGraw-Hill.	Alaszewski, A. (2006). Using Diaries for Social Research. Sage. ISBN: 978-0761941415
別名	diary triangulation, multi-method diary study, triangulated diary research, diary-based triangulation	diary study, diary technique, self-report diary, daily diary method
関連	2	5
概要	The triangulated diary method combines participant-generated diary records with at least one additional independent data source — such as interviews, observations, or documents — to verify, deepen, and cross-check findings. Rooted in Denzin's (1978) principle of methodological triangulation and Zimmerman and Wieder's (1977) diary-interview method, it uses the natural, time-stamped richness of diary data while mitigating the subjectivity and recall bias that a diary study alone cannot address.	The diary method is a data-collection technique in which participants record their thoughts, behaviours, events, or experiences in their own words at regular or event-contingent intervals over a defined study period. By capturing data close in time to the event, diaries reduce retrospective recall bias and give researchers access to the texture of everyday life as it unfolds — something one-off surveys and retrospective interviews cannot provide.