Abstract
Drawing on concepts from theories on persuasion, social psychology, and philosophy of language, this article presents the design of an ambient persuasive system that acts as an automatic facilitator by supporting a balanced flow of communication in group conversational activity. The system includes two main components: (a) a context-awareness system that monitors group member non-verbal behavior, and (b) a visualization component that promotes balanced participation, providing targeted directives to participants through peripheral displays. In two empirical studies, a strategy for influencing participant social dynamics based on subtle directives in the form of aesthetically pleasant visual animations was assessed. The findings provide insight on the effect, the acceptability, and the perceived influence of subtle peripheral persuasive messages for ambient displays. The studies indicate that when the participants understand the message intention, the subtle directives have a positive influence on group behavior, and are considered more appealing and less intrusive than overt, language-based messages. Furthermore, it was found that personality traits influenced attitudes towards the system.
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