Comparer des méthodes

	Observation non participante	Ethnographie	Entretien Structuré
Domaine	Méthodologie d'enquête	Qualitatif	Méthodologie d'enquête
Famille	Process / pipeline	Process / pipeline	Process / pipeline
Année d'origine	Formalized mid-20th century (Gold 1958); practice dates to late 19th-century social surveys	c. 1922 (Malinowski's Argonauts of the Western Pacific)	1940s–1950s
Auteur d'origine	Raymond Gold (role typology); earlier roots in social survey movement and Chicago School sociology	Bronisław Malinowski (modern ethnography); rooted in 19th-century anthropology	Survey research tradition; formalized by Campbell, Katona, and Kahn in mid-20th century
Type	Qualitative / quantitative observational data collection	Qualitative fieldwork tradition	Quantitative / mixed data collection technique
Source fondatrice	Gold, R. L. (1958). Roles in sociological field observations. Social Forces, 36(3), 217–223.	Hammersley, M. & Atkinson, P. (2019). Ethnography: Principles in Practice (4th ed.). Routledge. ISBN: 978-1138504462	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.
Alias	detached observation, systematic observation, structured field observation, external observation	Etnografi, participant observation, fieldwork, ethnographic research	standardized interview, formal interview, schedule-based interview, fixed-format interview
Apparentées	5	5	4
Résumé	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.	Ethnography is a qualitative research tradition in which a researcher immerses themselves in a social group or community over an extended period — typically three to six months or longer — to study its culture, values, and behaviours in their natural setting. Originating in social and cultural anthropology, and consolidated as a rigorous method by Bronisław Malinowski in the early twentieth century, ethnography produces rich, contextualised accounts of how people live, work, and make meaning together.	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.