เปรียบเทียบวิธี

	ระเบียบวิธีสัมภาษณ์เชิงลึก	ระเบียบวิธีวิจัยแบบกลุ่มสนทนา
สาขาวิชา	การวิจัยเชิงคุณภาพ	การวิจัยเชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline
ปีกำเนิด	1954	1956
ผู้ริเริ่ม	Carl Rogers and Herbert H. Hyman	Robert K. Merton and Paul F. Lazarsfeld
ประเภท	Method	Method
แหล่งต้นตำรับ	Kvale, S. (1996). InterViews: An Introduction to Qualitative Research Interviewing. SAGE Publications. ISBN: 978-0761908631	Krueger, R. A. (1994). Focus Groups: A Practical Guide for Applied Research. SAGE Publications. ISBN: 978-0803954366
ชื่อเรียกอื่น	IDI, qualitative interview, one-on-one interview, in-depth interviewing	FGD, focus group discussion, group interview
ที่เกี่ยวข้อง	5	4
สรุป	In-depth interviews are a qualitative research method in which a trained interviewer conducts one-on-one conversations with individual participants using open-ended questions to explore their experiences, perspectives, and understandings of a phenomenon. Developed in the 1950s by Rogers and Hyman, the method varies along a spectrum from structured (standardized question sets) to semi-structured (guided topic areas with flexibility) to unstructured (emergent, conversational). In-depth interviews are widely used in sociology, psychology, health sciences, anthropology, and organizational research to capture rich, detailed narratives and personal meaning.	Focus group discussions are a qualitative research method in which a trained moderator guides a small group (typically 6–12 participants) through structured or semi-structured discussion of a specific topic or product. Developed by Merton and Lazarsfeld in the 1950s for market research, focus groups are now widely used in health sciences, education, social sciences, and policy research. The method leverages group interaction to generate rich, contextual insights that individual interviews may not reveal.