The neurochemistry of fairness: clarifying the link between serotonin and prosocial behavior.

Decades of research have linked the neurotransmitter serotonin (5-HT) to prosocial behavior. However, the precise mechanisms through which 5-HT influences social interactions remain unclear. A neuroeconomics approach may help clarify these mechanisms. In a recent study, lowering 5-HT levels in healt...