So sánh phương pháp

	Phương pháp Nhật ký	Ghi chép Thực địa	Quan sát không tham gia
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline	Process / pipeline
Năm ra đời	1920s–1940s (systematised by Allport, 1942)	Late 19th century (formalized in 20th century)	Formalized mid-20th century (Gold 1958); practice dates to late 19th-century social surveys
Người khởi xướng	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.	Raymond Gold (role typology); earlier roots in social survey movement and Chicago School sociology
Loại	Qualitative / mixed-methods data-collection technique	Qualitative data collection and recording technique	Qualitative / quantitative observational data collection
Công trình gốc	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	Gold, R. L. (1958). Roles in sociological field observations. Social Forces, 36(3), 217–223.
Tên gọi khác	diary study, diary technique, self-report diary, daily diary method	fieldnotes, observational notes, ethnographic notes, jottings	detached observation, systematic observation, structured field observation, external observation
Liên quan	5	6	5
Tóm tắt	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.	Non-participant observation is a data-collection method in which the researcher observes behavior, interactions, or events in a natural or structured setting without joining or influencing the activity under study. The observer maintains a deliberate distance from participants to minimize their own effect on the phenomena being recorded, producing field notes, behavioral tallies, or recordings that reflect naturally occurring behavior rather than behavior shaped by researcher involvement.