So sánh phương pháp

	Nhóm tập trung có hỗ trợ qua điện thoại	Nhóm tập trung trực tuyến
Lĩnh vực	Phương pháp luận khảo sát	Phương pháp luận khảo sát
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1980s–1990s (widespread adoption)	1946 (focus groups); online variant ~1990s–2000s
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 Merton & Patricia Kendall (focus group origins); online adaptation by scholars including Stewart & Shamdasani in the 1990s
Loại	Qualitative group data collection technique	Qualitative group data collection
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	Stewart, D. W., & Shamdasani, P. N. (2017). Online Focus Groups. Journal of Advertising, 46(1), 48–60.
Tên gọi khác	telephone focus group, phone focus group, TAFG, teleconference focus group	virtual focus group, internet focus group, OFG, web-based focus group
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.	An online focus group is a moderated group discussion conducted via internet-based platforms — video conferencing, text chat, or asynchronous forums — to explore shared perceptions, attitudes, and experiences on a defined topic. It inherits the group-interaction dynamics of the traditional focus group while removing geographic barriers and enabling data collection from dispersed or hard-to-reach populations.