เปรียบเทียบวิธี

	การสังเกตแบบไม่เข้าร่วม	บันทึกภาคสนาม	การสัมภาษณ์แบบมีโครงสร้าง
สาขาวิชา	ระเบียบวิธีสำรวจ	ระเบียบวิธีสำรวจ	ระเบียบวิธีสำรวจ
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	Formalized mid-20th century (Gold 1958); practice dates to late 19th-century social surveys	Late 19th century (formalized in 20th century)	1940s–1950s
ผู้ริเริ่ม	Raymond Gold (role typology); earlier roots in social survey movement and Chicago School sociology	Rooted in 19th-century anthropology and sociology; systematized by ethnographers such as Bronislaw Malinowski and later Robert Emerson et al.	Survey research tradition; formalized by Campbell, Katona, and Kahn in mid-20th century
ประเภท	Qualitative / quantitative observational data collection	Qualitative data collection and recording technique	Quantitative / mixed data collection technique
แหล่งต้นตำรับ	Gold, R. L. (1958). Roles in sociological field observations. Social Forces, 36(3), 217–223.	Emerson, R. M., Fretz, R. I., & Shaw, L. L. (1995). Writing Ethnographic Fieldnotes. University of Chicago Press. ISBN: 978-0226206813	Fontana, A., & Frey, J. H. (2000). The interview: From structured questions to negotiated text. In N. K. Denzin & Y. S. Lincoln (Eds.), Handbook of Qualitative Research (2nd ed., pp. 645–672). Sage.
ชื่อเรียกอื่น	detached observation, systematic observation, structured field observation, external observation	fieldnotes, observational notes, ethnographic notes, jottings	standardized interview, formal interview, schedule-based interview, fixed-format interview
ที่เกี่ยวข้อง	5	6	4
สรุป	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.	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 structured interview is a data collection technique in which every participant is asked exactly the same pre-specified questions in the same order, using standardized wording. Because the interview schedule is fixed, responses across participants are directly comparable, enabling quantitative aggregation and statistical analysis. It sits at the most standardized end of the interview continuum, between the self-administered questionnaire and the semi-structured interview.