手法を比較

	三角化研究日記（Triangulated Research Diary）	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	1970s–1980s (triangulation formalized by Denzin 1978; diary methodology developed through 1980s)	1920s–1940s (systematised by Allport, 1942)
提唱者	Norman K. Denzin (triangulation framework); Mary Louise Holly (research diary practice)	Gordon Allport (systematic social-science use); Nels Anderson (early fieldwork diaries)
種類	Qualitative 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	reflective diary triangulation, multi-method research journal, triangulated reflexive diary, diary-based triangulation	diary study, diary technique, self-report diary, daily diary method
関連	6	5
概要	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.	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.