Fig. 2.

Popularity of targets (group members presented as stimuli during the face-viewing task) predicted activity in each of the valuation and social cognition ROIs (all Ps < 0.05, as indicated by asterisks) except rTPJ (P > 0.5), even when controlling for perceivers’ own liking of target and other potential confounds (Results, SI Text, and Tables S2 and S3). Core brain regions underlying (A) valuation and (B) social cognition—and corresponding ROIs—were identified using two independent functional localizer tasks (Methods and SI Text). Each task identified a set of commonly coactivated and strongly interconnected regions that are referred to collectively as the valuation and social cognition systems, respectively. Illustrations of the parametric relationship between target popularity and βs extracted from (C) valuation system ROIs and (D) social cognition system ROIs. Note that activity is averaged across perceivers for visual clarity.