手法を比較

	対面式日記法	参与観察
分野	調査方法論	質的研究
系統	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (formalized face-to-face protocol era)	1922
提唱者	Rooted in sociological and psychological diary research traditions; face-to-face protocols formalized in the late 20th century	Bronislaw Malinowski
種類	Qualitative / mixed-methods data collection technique	Method
原典	Alaszewski, A. (2006). Using Diaries for Social Research. Sage Publications. ISBN: 978-0761941484	Geertz, C. (1973). The Interpretation of Cultures. Basic Books. ISBN: 978-0465026432
別名	in-person diary study, face-to-face diary study, personal diary method, paper diary method	ethnographic observation, participatory observation, overt observation, immersive observation
関連	5	4
概要	The face-to-face diary method is a data collection technique in which participants are recruited, briefed, and supported through in-person researcher contact while keeping structured or open-ended diaries over a defined period. By combining the temporal depth of diary records with the rapport and clarity of direct researcher interaction, it reduces ambiguity in diary instructions, improves compliance, and allows the researcher to probe or clarify entries at handover or follow-up meetings.	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.