手法を比較

	ダイアリー法	フィールドノート――質的研究における観察記録	縦断調査
分野	調査方法論	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline	Process / pipeline
提唱年	1920s–1940s (systematised by Allport, 1942)	Late 19th century (formalized in 20th century)	1940s (panel survey tradition); longitudinal designs codified mid-20th century
提唱者	Gordon Allport (systematic social-science use); Nels Anderson (early fieldwork diaries)	Rooted in 19th-century anthropology and sociology; systematized by ethnographers such as Bronislaw Malinowski and later Robert Emerson et al.	Established tradition; formalized in social science by Paul Lazarsfeld and colleagues (1940s panel studies)
種類	Qualitative / mixed-methods data-collection technique	Qualitative data collection and recording technique	Quantitative / mixed-methods survey design
原典	Alaszewski, A. (2006). Using Diaries for Social Research. Sage. ISBN: 978-0761941415	Emerson, R. M., Fretz, R. I., & Shaw, L. L. (1995). Writing Ethnographic Fieldnotes. University of Chicago Press. ISBN: 978-0226206813	Menard, S. (2002). Longitudinal Research (2nd ed.). Sage Publications. ISBN: 978-0761922292
別名	diary study, diary technique, self-report diary, daily diary method	fieldnotes, observational notes, ethnographic notes, jottings	panel survey, repeated-measures survey, longitudinal panel study, wave survey
関連	5	6	3
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.	Field notes are detailed written records created by researchers during or immediately after direct observation in a naturalistic setting. They capture what is seen, heard, and experienced — including behaviors, interactions, physical environments, and the researcher's own analytic impressions — forming the primary data source for ethnographic and observational studies.	A longitudinal survey collects structured questionnaire data from the same individuals or units at two or more distinct points in time. By tracking the same respondents across waves, researchers can distinguish genuine change from stable individual differences, establish temporal ordering between variables, and model trajectories of attitudes, behaviors, or outcomes in ways that a single cross-sectional snapshot cannot support.