A comprehensive model of anonymity in computer-supported group decision making

Drawing on recent theoretical efforts, a three dimensional model of anonymity in computer-supported group discussion is developed. Applying this model to a review of empirical literature shows that studies of the idea generation phase of decision making have dominated this literature, and that the role of anonymity in discussion and consensus reaching has received much less attention. Propositions on the effects of anonymity on consensus decision making discussions are developed. It is argued that anonymity removes some tools of persuasion and increases the difficulty of coordinating discussion. It is proposed that participants in anonymous discussions will find substitutes for the persuasion and coordination functions served by identity cues. It is also proposed that the degree of anonymity is affected by acquaintance among group members, and that anonymity changes over time.

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