Action-effect sharing induces task-set sharing in joint task switching

作者：Yamaguchi Motonori; Wall Helen J; Hommel Bernhard

来源：Cognition, 2017, 165: 113-120.

DOI：10.1016/j.cognition.2017.05.022

• Joint task switching
• Joint performance
• Co-representation
• Action effect
• Response-effect compatibility

A central issue in the study of joint task performance has been one of whether co-acting individuals perform their partner's part of the task as if it were their own. The present study addressed this issue by using joint task switching. A pair of actors shared two tasks that were presented in a random order, whereby the relevant task and actor were cued on each trial. Responses produced action effects that were either shared or separate between co-actors. When co-actors produced separate action effects, switch costs were obtained within the same actor (i.e., when the same actor performed consecutive trials) but not between co-actors (when different actors performed consecutive trials), implying that actors did not perform their co-actor's part. When the same action effects were shared between co-actors, however, switch costs were also obtained between co-actors, implying that actors did perform their co-actor's part. The results indicated that shared action effects induce task-set sharing between co-acting individuals.

• 出版日期2017-8