手法を比較

	電話アシスト型フォーカスグループ	オンラインフォーカスグループ
分野	調査方法論	調査方法論
系統	Process / pipeline	Process / pipeline
提唱年	1980s–1990s (widespread adoption)	1946 (focus groups); online variant ~1990s–2000s
提唱者	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
種類	Qualitative group data collection technique	Qualitative group data collection
原典	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.
別名	telephone focus group, phone focus group, TAFG, teleconference focus group	virtual focus group, internet focus group, OFG, web-based focus group
関連	4	5
概要	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.