ABSTRACT
Yet these questions are of fundamental importance for group task performance. Indeed, when a group member is performing a task, other group members will often be present. Task performance in the presence of others will be the topic of this chapter. Studies using this audience paradigm have participants work on a task while others (may) observe them. Further, when group members perform similar tasks alongside one another, there will be mutual in¯uence among group members. In a co-action paradigm participants work on a task in the presence of others who are working on the same task. These others may at the same time be an audience that can observe the participant.
