Previous research suggested that prototypical group members tend to have stronger intergroup bias than the non-prototypical. However, it is not clear what is the root of bias: whether it is ingroup favoritism or outgroup derogation? This study investigated the effect of urban residents' prototypicality on their intergroup bias against rural-to-urban migrants in China. Correlational Study 1 showed that prototypicality is positively associated with ingroup favoritism, but not outgroup derogation. In Study 2, urban resident's prototypicality was experimentally manipulated. The results indicated that prototypicality could lead to ingroup favoritism, but not outgroup derogation against rural-to-urban migrants. The results consistently showed that ingroup favoritism is the root of prototypical urban residents' intergroup bias against rural-to-urban migrants.%已有研究表明典型群体成员会表现出更强的群际偏差.然而,典型群体成员表现群际偏差的基础是内群体偏好还是外群体贬损尚未明确.本研究以中国社会背景下城市居民与农民工的群际关系为例,对典型城市居民表现群际偏差的基础进行探索.研究一采用相关研究设计考察典型性与群际偏差的关系,结果表明越典型的城市居民会表现越强的内群体偏好,但外群体贬损不受典型性影响.研究二采用实验设计对城市居民典型性进行操纵,结果进一步证实了典型性会导致内群体偏好,而非外群体贬损.研究结果一致地表明,典型城市居民表现群际偏差的基础是内群体偏好而非外群体贬损.
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