Six Grade primary children from two primary school in Liaoning Province participated this study. It is on purpose to explore effect of children social exclusion on pro-social behavior and moderate effect of esteem. The experiment was submitted to a 3(degree of exclusion: certain exclusion, uncertain exclusion, and acceptance) × 2(gender: male, female) between subject experiment design. The dependent factor was pro-social behavior.The second experiment aimed to further examine moderate effect of esteem on impact of children social exclusion on pro-social behavior. The experiment was submitted to 3(degree of exclusion: certain exclusion, uncertain exclusion and acceptance) ×2(trait esteem: high and low). The dependent factor was pro-social behavior. The statistical results indicated main effect of degree of social exclusion. The further planned comparison found certain exclusion group acted less pro-social behavior than uncertain exclusion group, verifying the validity of experiment 1 paradigm of social exclusion. Main effect of esteem was not significant, but high esteem group was higher in pro-social behavior than low esteem group. There was a significant interaction between social exclusion and esteem. Namely, esteem moderated in relationship between social exclusion and pro-social behavior. The experiment outcome underscored the hypothesis.Further simple effect analysis showed that in high esteem group, different social exclusion children behaved distinctively in pro-social behavior. In low esteem group,different social exclusion impacted pro-social behavior significantly among groups. And planned comparison found remarkable difference. This demonstrated that with varying in children esteem, effect of social exclusion on children pro-social behavior declines accordingly.The third experiment investigated increasing in esteem moderated effect of children social exclusion on pro-social behavior. The experiment was submitted to a 3(degree of exclusion: certain exclusion, uncertain exclusion and acceptance) ×2(esteem group: control and increasing group) between subject ANOVA. Co-variables were positive and negative emotion. We found main effect of social exclusion and main effect of esteem group. In certain exclusion situations, increasing esteem group outperformed more pro-social behavior than esteem group and the distinct was identical with situations of uncertain exclusion and acceptance. This illustrated that esteem promoted pro-social behavior in children social exclusion, and had a moderate effect which confirmed hypothesis. |