เปรียบเทียบวิธี

	การวิจัยแบบกลุ่มสนทนา	ทฤษฎีฐานราก	การสืบสวนเชิงพรรณนา
สาขาวิชา	เชิงคุณภาพ	การวิจัยเชิงคุณภาพ	การวิจัยเชิงคุณภาพ
ตระกูล	Process / pipeline	Process / pipeline	Process / pipeline
ปีกำเนิด	1940s (sociological origin); modern applied form from the 1980s–1990s	1967	2000
ผู้ริเริ่ม	Robert K. Merton (sociological precursor, 1940s); popularised in applied research by Richard A. Krueger	Barney Glaser and Anselm Strauss	D. Jean Clandinin and F. Michael Connelly
ประเภท	Qualitative data collection method	Method	Method
แหล่งต้นตำรับ	Krueger, R.A. & Casey, M.A. (2014). Focus Groups: A Practical Guide for Applied Research (5th ed.). Sage. ISBN: 978-1483365244	Glaser, B. G., & Strauss, A. L. (1967). The discovery of grounded theory: Strategies for qualitative research. Aldine.	Clandinin, D. J., & Connelly, F. M. (2000). Narrative inquiry: Experience and story in qualitative research. Jossey-Bass.
ชื่อเรียกอื่น	focus group discussion, FGD, group interview, Odak Grup Araştırması	GT, Grounded Theory Approach	Narrative Analysis, Narrative Research, Life Story Method
ที่เกี่ยวข้อง	6	3	3
สรุป	Focus group research is a qualitative data-collection method in which a trained moderator guides structured discussions with homogeneous groups of six to ten participants to explore ideas, attitudes, and perceptions on a defined topic. Developed from sociological roots in the 1940s and systematised for applied research by Krueger and Casey, the method leverages group interaction as a data source — revealing not just what people think, but how they negotiate and articulate views in a social setting.	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.	Narrative inquiry is a qualitative research methodology that treats stories and life narratives as primary data, analyzing how individuals construct meaning and identity through storytelling. Developed by D. Jean Clandinin and F. Michael Connelly (2000), narrative inquiry examines the narratives people tell about their lives, experiences, and transitions, understanding that people make sense of experience through narrative.