Dissociable brain networks involved in development of fairness considerations: understanding intentionality behind unfairness.

摘要: In this functional magnetic resonance imaging study, we examined developmental changes in the brain regions involved reactions to unfair allocations. Previous studies on adults suggested that unfairness are not only affected by distribution itself but also ascribed intentionality of proposer. current employed mini Ultimatum Game (Falk, Fehr, & Fischbacher, 2003) examine responder behavior offers varying degrees intentionality. Sixty-eight participants from four age groups (10-, 13-, 15-, and 20-year-olds) carried out task while fMRI data were acquired. Participants all ages showed activation bilateral insula dorsal anterior cingulate cortex (dACC) during rejection unintentional acceptance intentional offers. Rejection further increasing with temporoparietal junction dorsolateral prefrontal cortex. These findings provide evidence for an early developing insula-dACC network detecting personal norm-violations gradually involvement temporal related considerations social reasoning. The results discussed light recent development adolescent network.