The neuroscience of group membership

► The study aimed to uncover the neural processing of group membership. ► Participants categorized social and non-social words during fMRI. ► The 'social brain' network was active during social word categorization. ► In-group compared to out-group words were associated with activation in medial PFC and ACC. ► Results suggest that the 'social' and 'personal self' are closely related.