手法を比較

	非構造化面接	現象学
分野	質的手法	質的手法
系統	Process / pipeline	Process / pipeline
提唱年	Mid-20th century (Rogers ~1942; Spradley ~1979)	Early 20th century (Husserl ~1900–1913; Heidegger ~1927)
提唱者	Rooted in anthropological and sociological fieldwork traditions; systematised by James P. Spradley and Carl Rogers (non-directive counselling interview)	Edmund Husserl (transcendental); Martin Heidegger (hermeneutic)
種類	Qualitative research method	Qualitative research approach
原典	Spradley, J. P. (1979). The Ethnographic Interview. Holt, Rinehart and Winston.	Moustakas, C. (1994). Phenomenological Research Methods. Sage. ISBN: 978-0803957466
別名	open-ended interview, non-directive interview, in-depth interview, conversational interview	Fenomenoloji, phenomenological inquiry, phenomenological analysis
関連	6	6
概要	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.	Phenomenology is a qualitative research approach that investigates how participants live through and make sense of a specific experience. Rooted in the philosophy of Edmund Husserl and extended by Martin Heidegger, it aims to reveal the essential structures of lived experience rather than to measure or predict outcomes. The two most widely applied variants are Husserl's transcendental phenomenology, which seeks universal essences, and Heidegger's hermeneutic phenomenology, which emphasises interpretation within context.