Abstract
The influence of others on own actions, the basis of which is forming representations of others’ tasks through shared attention, has been elucidated (Sebanz et al., 2003). We experimentally investigated the effect of shared attention on encoding during task-sharing. The participants conducted a word category judgment task in which they responded to different word categories, alone in the individual condition and with a partner in the joint condition. In the subsequent surprise recall task, the participants were required to recall all words presented on the screen regardless of category or social condition. The results showed that the recall of the self-category was higher than that of the partner, and that the self-category advantage was smaller in the joint condition than in the individual condition. This suggests the formation of co-presentations in the shared attention condition, and the possibility that encoding for the other category is conducted similar to the self-category.
