Perspective taking modulates positivity bias in self-appraisals: behavioral and event-related potential evidence.

Previous studies have reported that when people self-reflect--they typically judge the self as more positive (or less negative) compared to others on a range of dimensions (such as health, social skills, or achievement). In the present study, we investigated whether viewing the self through the eyes of other people reduces this egocentric (self-centered) bias. Event-related brain potentials (ERPs) were examined in 17 subjects who performed judgments of adjectives in positive or negative valences from either self-perspective or other-perspective. Reaction times revealed an interaction between the factors perspective and emotional valence. Faster responses occurred after positive words in the self-perspective condition. A similar interaction was observed in the ERP waveforms in the time range of the N400 component: smaller N400 amplitudes were elicited by positive stimuli compared to negative stimuli in the self-perspective condition, but not in the other-perspective condition. Similarly, a reversed pattern was found in the late positive component (LPC) at 415-815 ms. The present study suggests that shifts in perspectives between self and others can change self-appraisal, which in turn reduces egocentric biases of the self. On a neural level, this modulation may be associated with an increase in self-monitoring processes.