Latinos represent a large ethnic minority group in the United States, but their political participation, including on social media, is low compared to other groups. Guided by social identity and social cognitive theories, this study examines the influence of two dimensions of ingroup identification (i.e., group self-definition, group self-investment) on Latinos(as)’ political expression about immigration and Latino culture on social media, the mediating role of pro-attitudinal selective exposure to media content related to these topics, and the moderating role of collective efficacy. Results suggest a positive and consistent association between group self-definition and social media political expression (SMPE) about both topics. Further, pro-attitudinal selective exposure was found to mediate the relationship between group self-definition and expression about both topics. Finally, collective efficacy moderated the relationship between group self-definition and SMPE about immigration.

中文翻译：

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少数民族的社交媒体政治使用：群体识别，选择性暴露和集体效能如何塑造社交媒体的政治表达

拉丁美洲人在美国占很大的少数族裔群体，但与其他群体相比，他们在政治上（包括在社交媒体上）的政治参与度较低。在社会认同和社会认知理论的指导下，本研究考察了群体认同的两个维度（即群体自我定义，群体自我投资）对拉丁裔（as）关于移民的政治表达和拉丁裔文化对社交媒体的影响，态度选择性接触与这些主题相关的媒体内容的中介作用，以及集体功效的调节作用。结果表明，关于这两个主题的群体自定义与社交媒体政治表达（SMPE）之间存在积极且一致的关联。进一步，态度前选择性暴露被发现介导了小组自我定义与两个主题表达之间的关系。最后，集体效能缓解了群体自我定义与SMPE移民之间的关系。