中文摘要：

两个实验探索群际威胁情境下表达性和能动性自我肯定对个体自我评价的影响。结果发现，在群际威胁情境下个体的自我评价降低，通过表达性自我肯定或能动性自我肯定，自我评价显著提高，并与无威胁无自我肯定组无显著差异。研究表明，群际威胁虽然是群体水平的感知，但会对个体的自我评价产生消极影响，对社会认知基本维度的自我肯定能有效缓解群际威胁对自我评价的消极影响。

英文摘要：

People perceive intergroup threat when their out-group occupies more resources. Such threat can cause negative cognition and behavior to both out-group and individual. An example of the negative results is a bad performance in a math test under stereotype threat. One valid strategy to buffer the negative effect is self-affirmation. Research on self-affirmation has found that the negative impact of threat can be reduced by affirming a specific value or personality, for self-affirmation is a good way to integrate self. Based on the stress and coping theory, people need to appraise their own resource to cope with stress. As two basic dimensions in self-judgment and self-evaluation, agency and communion are two important aspects of self resources related to capacity and social relationship, which are important resources to cope with the stress from intergroup threat. In light of these considerations, we wish to explore whether affirming self by agency and communion resources will enhance self-evaluation under intergroup threat in two studies. A total number of 67 undergraduates and graduates took part in Study 1. They were assigned to 3 groups（threat with self-affirmation; threat without self-affirmation; control）. Participants were first asked to read a web-page and then to fill a manipulation check by an emotion scale. The web-page in threat condition was about 985 schools occupied more resources and the web-page in no threat condition was about the April Fool＇s Day. After that, subjects in self-affirmation condition answered a 3-item self-affirmation questionnaire while those in control group filled 3 items about diet situation in 24 hours. Finally, all subjects completed the Personal Evaluation Inventory to measure their self-evaluation. Study 2 included 70 undergraduates and graduates as subjects, which employed the same method and materials with Study 1 except for the self-affirmation questionnaire.The two studies leaded to the same results. When there were no self-affirmation, an independent sample t tes