Comparer des méthodes

	Entretien non structuré	Théorie ancrée
Domaine	Qualitatif	Recherche qualitative
Famille	Process / pipeline	Process / pipeline
Année d'origine	Mid-20th century (Rogers ~1942; Spradley ~1979)	1967
Auteur d'origine	Rooted in anthropological and sociological fieldwork traditions; systematised by James P. Spradley and Carl Rogers (non-directive counselling interview)	Barney Glaser and Anselm Strauss
Type	Qualitative research method	Method
Source fondatrice	Spradley, J. P. (1979). The Ethnographic Interview. Holt, Rinehart and Winston.	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.
Alias	open-ended interview, non-directive interview, in-depth interview, conversational interview	GT, Grounded Theory Approach
Apparentées	6	3
Résumé	An unstructured interview is a qualitative data-collection method in which the researcher enters the conversation with a broad topic or grand-tour question rather than a fixed questionnaire, allowing the participant to direct the flow and depth of the discussion. The approach prioritises the participant's own conceptual categories and narrative logic over the researcher's pre-formed agenda, making it especially powerful for exploratory inquiry into unfamiliar or complex social phenomena.	Grounded Theory (GT) is a systematic qualitative research methodology in which theory emerges directly from data through iterative analysis, rather than being imposed before data collection. Developed by Barney Glaser and Anselm Strauss in 1967, GT prioritizes generating explanatory frameworks grounded in evidence.