手法を比較

	ダイアリー法	参与観察	研究ダイアリー
分野	調査方法論	質的研究	調査方法論
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1920s–1940s (systematised by Allport, 1942)	1922	1981 (methodological codification); diary use in research dates to 19th-century anthropology
提唱者	Gordon Allport (systematic social-science use); Nels Anderson (early fieldwork diaries)	Bronislaw Malinowski	Robert G. Burgess (systematic methodological treatment)
種類	Qualitative / mixed-methods data-collection technique	Method	Qualitative data collection and reflexivity tool
原典	Alaszewski, A. (2006). Using Diaries for Social Research. Sage. ISBN: 978-0761941415	Geertz, C. (1973). The Interpretation of Cultures. Basic Books. ISBN: 978-0465026432	Burgess, R. G. (1981). Keeping a research diary. Cambridge Journal of Education, 11(1), 75–83.
別名	diary study, diary technique, self-report diary, daily diary method	ethnographic observation, participatory observation, overt observation, immersive observation	researcher diary, field diary, research journal, reflexive diary
関連	5	4	6
概要	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.	Participant observation is a qualitative research method in which the researcher embeds themselves within a community, organization, or social setting for an extended period, engaging in the activities and relationships of the group while systematically observing and documenting behavior, interactions, and cultural meaning. Pioneered by Malinowski in the 1920s and developed in anthropology, the method has been adopted across sociology, education, health sciences, and organizational research. The researcher functions as both insider (participating in group activities) and outsider (maintaining analytical distance), generating thick description—rich accounts of context, behavior, and meaning that reveal how people actually live and interact.	A research diary is a systematic, dated log maintained by the researcher throughout a study to record methodological decisions, emergent observations, analytical hunches, and reflections on researcher positionality. Unlike a participant diary, it is authored by the researcher and functions simultaneously as a data source, an audit trail, and a reflexivity instrument.