中文摘要：

群体独特性影响群体认同，较高或较低的群体独特性都可能引发群际偏差，分别称为“反射式独特性假说”与“反应式独特性假说”。调节作用研究揭示，在较低群体认同或上位群体分类凸显时，群体独特性越高越易引发群际偏差；而在较高群体认同时，独特性越低越易引发群际偏差。动机作用的研究表明，在具有群际竞争目标时，这两种过程分别受工具性动机与认同性动机的驱动。情绪与认知的中介作用研究显示，在低独特性条件下，社会身份复杂性与焦虑情绪可起中介作用引发群际偏差。

英文摘要：

Group distinctiveness would underlie intergroup bias has an influence on group identity. in certain conditions which are Both high and low group distinctiveness labeled as ＂ reflective distinctiveness hypothesis＂ and ＂ reactive distinctiveness hypothesis＂. Research on moderators indicate that when group members are highly identified with in-group, low group distinctiveness inclines to lead to intergroup bias. Conversely, when group members are lowly identified with in-group or when superordinate categories are available and salient, high group distinctiveness tends to arouse intergroup bias. Research on the effect of motivation demonstrate that instrumental and identity motivation were found to drive these two processes respectively in the condition with intergroup competitive goal. Furthermore, research focused on cognitive and emotional mediation effect show that group-level anxiety and complexity of social identity would significantly mediate the effect of low group distinctiveness on intergroup bias.