Declining natural resources or climate change are examples of global challenges that characterize our globalized world. A sustainable human cohabitation depends on global intergroup cooperation and joint efforts to solve these crises. Intergroup contact tends to reduce intergroup prejudice and can facilitate such intergroup cooperation. Another line of research indicates that these improved attitudes may reduce the motivation to collective action among members of disadvantaged groups in situations of intergroup conflict, indicating that intergroup contact and collective action are antagonistic processes. In this article, we argue instead that intergroup contact may facilitate collective action intentions against global crises (e.g., climate change or global economic inequalities) that require international cooperation. Specifically, we propose international contact to foster recategorization on the level of all humanity, and in turn intentions of globally responsible actions. We first review evidence of the effects of contact with regard to intergroup cooperation. It is followed by a discussion of the unique nature of collective action concerning a common global challenge. We then integrate both lines of research within the Common Ingroup Identity approach. In two empirical studies (N₁ = 104, N₂ = 259), we show first evidence that international contact increases identification and solidarity with humanity which then (according to Study 2) is also positively related to intentions of global responsible behavior. Our analysis thus suggests that intergroup contact, beyond the improvement of attitudes, may serve as an effective initiator of social change.

中文翻译：

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聚在一起，感觉在一起，一起行动：国际人际交往增加了对人性和全球集体行动的认同

自然资源下降或气候变化是我们全球化世界所面临的全球挑战的例子。可持续的人类同居取决于全球群体间的合作和共同努力以解决这些危机。群体间的接触往往会减少群体间的偏见，并可以促进这种群体间的合作。另一项研究表明，这些改善的态度可能会降低群体间冲突情况下弱势群体成员之间采取集体行动的动机，这表明群体间的接触和集体行动是对立的过程。相反，在本文中，我们认为，群体间的接触可以促进针对需要国际合作的全球危机（例如，气候变化或全球经济不平等）的集体行动意图。具体来说，我们建议进行国际联系，以促进在全人类层面上重新分类，进而促进全球负责任行动的意图。我们首先回顾一下联系对小组间合作的影响的证据。随后讨论了关于共同的全球挑战的集体行动的独特性。然后，我们将这两个研究领域整合到“共同的群体身份”方法中。在两项实证研究中（然后，我们将这两个研究领域整合到“共同的群体身份”方法中。在两项实证研究中（然后，我们将这两个研究领域整合到“共同的群体身份”方法中。在两项实证研究中（N ₁  = 104，N ₂  = 259），我们首先显示出国际联系增加了对人类的认同和团结，这（根据研究2）也与全球负责任行为的意图成正相关。因此，我们的分析表明，除了改善态度外，群体间的接触可以作为社会变革的有效发起者。