Dear Editor,rnNeuroticism,a crucial dimension of human personality,fluctuates from emotional stability to instability[1].Compared to those with emotional stability,individuals with emotional instability show stronger attentional bias to negative stimuli,lower life satisfaction,and tend to perform poorly (i.e.,fewer correct responses) in cognitivetasks.For instance,individuals with different emotional stabilities experience distinct decision-making responses,especially when facing inequity,as the unfairness induces typical conflict between self-interest and fairness [2].The ultimatum game (UG) simulates both fair and unfair decision-making situations,in which two individuals decide to split a sum of money:if the responder rejects the deal,neither of them gets anything,however,if the responder accepts,the deal goes ahead.Generally speak-ing,rational UG responders accept the offers,even the smallest ones,while some individuals choose to reject the offer to punish the proposer for unfair behaviors.