Social exclusion evokes social pain in excluded individuals. Neuroimaging studies suggest that this social pain is associated with activation of the dorsal anterior cingulate cortex (dACC), with further regulation of social pain being reflected in activation of the right ventrolateral prefrontal cortex (rVLPFC). The present study focused on factors that influence activation of the rVLPFC during social exclusion. We conducted a near-infrared spectroscopy (NIRS) experiment to investigate whether two psychosocial resources (general trust and trait self-esteem) increase rVLPFC activity during social exclusion, thereby buffering against social pain. Thirty-seven undergraduates participated in an NIRS session in which they were socially rejected during an online ball-tossing game. Levels of general trust and trait self-esteem were negatively correlated with self-reported social pain in the exclusion conditions. Furthermore, general trust was positively correlated with rVLPFC activity, although there was no such relationship with self-esteem. rVLPFC activity mediated the relationship between general trust levels and social pain. The rVLPFC appears to be critical for the regulation of social pain. Taken together, these findings suggest that general trust and trait self-esteem probably have different impacts at different times over the course of a series of adaptive processes, all geared toward the modulation of social pain.

Social exclusion often evokes social pain in excluded individuals. Although this pain can trigger various interpersonal difficulties (e.g., aggression, depression), it is still unclear which psychological approach might best help to regulate social pain. However, recent work suggests that temporal distance helps to facilitate adaptive coping and self-control. The present study measured ventrolateral prefrontal cortex (VLPFC) activity during social exclusion, using near-infrared spectroscopy (NIRS) to examine the functional relationship between "temporal distance approach," or thinking about the distant future, and the social pain regulation process. Participants that imagined the distant future, next year, and beyond, felt less social pain and showed increased right (r)VLPFC activity during social exclusion, as compared to imagining events in the near future, such as tonight and tomorrow. Furthermore, rVLPFC activity mediated the relationship between temporal distance and social pain. On the basis of these findings, the effect of temporal distance on the process of adaptation after social exclusion is discussed. It is suggested that temporal distance moderates the process of regulating the impact of social exclusion.

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