The Influence Of Compnion Gender On Outcome Evaluations

Cooperation exists widely in the animal kingdom and human society. There may be cooperation between the members of the animal kingdom and the members of different ethnic groups,such as the rhino and the rhino. In the human society,there may be cooperation among individuals or different groups of individuals who have a kinship or acquaintance with a different group of people. Previous studies show that men and women in many ways showed some differences, also elaborated on the gender differences in terms of cooperation,when men and women in the face of different sex partner, the brain activation degree will show some differences. This study using high temporal resolution of ERP technology,explore the influence peer sex on the evaluation results in a cooperative game by Chuck-A-Luck dice game tasks and explore the companion gender impact the neural mechanism of evaluation outcomes of men and women.The experiment one investigated the effect of peer sex on male evaluation outcomes in the cooperative game. The results show that completing the tasks alone evoked a larger FRN than completing the tasks working with a partner;when togethering with same-sex partners,the amplitude of FRN is larger than togethering witha female partner;Comparing with completing tasks with a partener,completing tasks alone can evoke a larger P300,men with same-sex partnered to greater than heterosexual induce cooperation with P300. These results indicate that peer sex has a role in the evaluation of male outcomes in a cooperative game.Experiment two examined the effect of peer sex on female outcome in a cooperative game. Through the analysis of experimental data,we can conclude that,women alone to complete the task and working with a partner to complete the task FRN amplitude was induced no significant difference;women alone to complete the task evoked a greater P300 than with a partner,female-female induced a greater P300 than same-sex.This result showed that peer gender had no effect on the early stage of female outcome evaluation,and it had a certain effect on the later cognitive assessment.It can be seen through the FRN difference wave analysis of peer sex on the results of the evaluation of early stage(FRN) had no effect. The reason may is FRN response is the brain of the rough primary processing,only the good or bad binary evaluation, not on the interval context information integration,only carries on the analysis to the current situation of information. That is to say,the early rapid results evaluation system encodes only the feedback information. Peer sex had influence on the later stage of cognitive assessment(P300). P300 reflects a late top down outcome evaluation process,which may be related to social attention to resource allocation and high levels of motivation / affective evaluation of the processing process. In summary,peer sex had no effect on the early stage of the evaluation of the outcome(FRN),and the effect of peer gender on the later stage of cognitive assessment(P300).