Despite Greta Thunberg's popularity, research has yet to investigate her impact on the public's willingness to take collective action on climate change. Using cross‐sectional data from a nationally representative survey of U.S. adults (N = 1,303), we investigate the “Greta Thunberg Effect,” or whether exposure to Greta Thunberg predicts collective efficacy and intentions to engage in collective action. We find that those who are more familiar with Greta Thunberg have higher intentions of taking collective actions to reduce global warming and that stronger collective efficacy beliefs mediate this relationship. This association between familiarity with Greta Thunberg, collective efficacy beliefs, and collective action intentions is present even after accounting for respondents’ overall support for climate activism. Moderated mediation models testing age and political ideology as moderators of the “Greta Thunberg Effect” indicate that although the indirect effect of familiarity with Greta Thunberg via collective efficacy is present across all age‐groups, and across the political spectrum, it may be stronger among those who identify as more liberal (than conservative). Our findings suggest that young public figures like Greta Thunberg may motivate collective action across the U.S. public, but their effect may be stronger among those with a shared political ideology. Implications for future research and for broadening climate activists’ appeals across the political spectrum are discussed.

中文翻译：

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Greta Thunberg效应：熟悉Greta Thunberg预测有意在美国从事气候行动主义

尽管Greta Thunberg受欢迎，但尚未进行研究来调查她对公众采取集体行动应对气候变化的意愿的影响。使用美国全国代表性调查（N  = 1,303）的横截面数据，我们研究了“格雷塔·滕伯格效应”，或接触Greta Thunberg是否可以预测集体效力和参与集体行动的意图。我们发现，对格蕾塔·滕贝格（Greta Thunberg）更加熟悉的人有更高的意愿采取集体行动来减少全球变暖，而更强的集体效能信念可以调解这种关系。即使考虑了受访者对气候行动的总体支持，对格蕾塔·滕伯格（Greta Thunberg）的熟悉程度，集体效能信念和集体行动意图之间的这种联系仍然存在。测试年龄和政治意识形态的调解模型是“ Greta Thunberg效应”的调解者，它表明，尽管通过集体效力对Greta Thunberg进行熟悉的间接影响存在于所有年龄段和整个政治领域，在那些认为自己比较自由主义（比保守派）的人中，这种态度可能更强。我们的研究结果表明，像格雷塔·图恩伯格（Greta Thunberg）这样的年轻公众人物可能会激发整个美国公众的集体行动，但在具有共同政治意识形态的人中，其影响可能会更大。讨论了对未来研究和扩大气候活动家在各个政治领域的吸引力的影响。