So sánh phương pháp

	Nhóm tập trung có hỗ trợ qua điện thoại	Face-to-face Focus Group
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1980s–1990s (widespread adoption)	1940s (Merton & Lazarsfeld); systematised 1980s–1990s
Người khởi xướng	Adapted from in-person focus group methodology (Robert Merton et al., 1950s); telephone modality adopted in market and health research from the 1980s onward	Robert K. Merton and Paul Lazarsfeld (focused interview); Richard Krueger and David Morgan (applied focus group methodology)
Loại	Qualitative group data collection technique	Qualitative group data-collection technique
Công trình gốc	Greenbaum, T. L. (1998). The Handbook for Focus Group Research (2nd ed.). Sage. [Chapter on telephone and technology-mediated focus groups] ISBN: 978-0761912316	Krueger, R. A., & Casey, M. A. (2015). Focus Groups: A Practical Guide for Applied Research (5th ed.). Sage Publications. ISBN: 978-1483365244
Tên gọi khác	telephone focus group, phone focus group, TAFG, teleconference focus group	in-person focus group, FGD, co-located focus group, face-to-face FGD
Liên quan	4	5
Tóm tắt	A telephone-assisted focus group is a qualitative data collection technique in which a moderator facilitates a structured group discussion among multiple participants connected simultaneously via a telephone conference bridge or audio platform. It preserves the core interactive dynamics of traditional focus groups — group synergy, probing, and spontaneous reactions — while eliminating the need for geographic co-location, making it suitable for hard-to-reach, geographically dispersed, or mobility-constrained populations.	A face-to-face focus group is a structured, moderated group discussion conducted in a shared physical space, typically with 6–10 participants who are selected because they share a relevant characteristic. The moderator follows a semi-structured topic guide to elicit opinions, perceptions, and experiences. Unlike surveys, focus groups capture social interaction — agreement, disagreement, and the group dynamics through which attitudes are formed and expressed.