The use of Focus Groups for Idea Generation: The Effects of Group Size, Acquaintanceship, and Moderator on Response Quantity and Quality
研究测试了焦点小组访谈的假设，发现个人访谈比焦点小组产生更多创意，八人小组比四人小组创意更多，主持人有无对创意数量无显著影响，而成员熟悉程度的影响不明确。
Assumptions about focus group interviewing were tested. Individual interviews generated more ideas than focus groups, eight-member groups generated significantly more ideas than four-member groups, no differences were found between focus groups and unmoderated discussion groups, and the effect of acquaintanceship was not clearly determined.