So sánh phương pháp

	Quan sát Dọc Không Tham gia	Quan sát không tham gia
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	Early–mid 20th century (systematized 1920s–1970s)	Formalized mid-20th century (Gold 1958); practice dates to late 19th-century social surveys
Người khởi xướng	Rooted in sociological field research traditions (e.g., Chicago School); longitudinal extension developed through 20th-century social science methodology	Raymond Gold (role typology); earlier roots in social survey movement and Chicago School sociology
Loại	Longitudinal observational data collection	Qualitative / quantitative observational data collection
Công trình gốc	Angrosino, M. (2007). Doing Ethnographic and Observational Research. Sage Publications. ISBN: 978-1412922173	Gold, R. L. (1958). Roles in sociological field observations. Social Forces, 36(3), 217–223.
Tên gọi khác	longitudinal unobtrusive observation, repeated non-participant observation, longitudinal systematic observation, extended non-participant field observation	detached observation, systematic observation, structured field observation, external observation
Liên quan	4	5
Tóm tắt	Longitudinal non-participant observation is a data collection method in which a researcher systematically watches and records naturally occurring behaviors, interactions, or events at a setting over multiple, repeated observation sessions spanning weeks, months, or years — without joining or influencing the activities being observed. The researcher remains an external observer, producing a time-ordered record of change or continuity in the phenomenon under study.	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.