Abstract
Acting together with others changes our cognition. The previous studies investigating shared representation have focused on a case when two actors simultaneously look at the same objects and shown that objects associated with another’s action can be well remembered. The present study investigated whether acting together affected spatial attention deployment among various objects when two actors did not necessarily attend to the same object. We asked pairs of participants to simultaneously search for different targets. Subsequently, in Experiment 1 where they searched for their partner’s targets, search facilitation in the displays that had been repeatedly presented did not occur. Experiment 2 using a surprise memory recognition test revealed that the partner’s search targets were remembered better than distractors simply presented many times. These results suggest that even when actors search for different things, the partner’s targets are implicitly attended to, consequently allowing them to form similar memories.
