Exposure to money modulates the processing of charitable donation: An event-related potentials study.

Exposure to monetary cues might affect charitable donations, but little is known about how monetary cues affect charitable donations from the neural perspective. The present study examined the effect of monetary cues on charitable donations by means of event-related potentials (ERPs). Participants primed with monetary or neutral images decided whether to accept donation offers with the high, moderate, and low costs. The behavioural results showed that in the money-primed condition, participants took more time to decide for the high-cost than for the moderate and low-cost donation offers. The ERP results showed that the P2 and P3 were larger in the money-primed condition relative to the neutral images condition. Notably, participants primed with money demonstrated larger P3 for the high-cost donation offers than for the moderate and low-cost offers, but this difference was not observed in the control condition. These findings indicate that people primed with money may pay more attention to the cost-relevant information related to their self-interests when conducting prosocial behaviours.