Cooperation with Strangers: Spillover of Community Norms

We thank Lisha Liu for helpful comments on an earlier draft of this article. Ruizhe Huang provided helpful assistance with the online experiment conducted in the Yangzi River Delta region. Victor Nee gratefully acknowledges generous funding for the research from the John Templeton Foundation (2005-2009; 2015-2019) and the College of Arts and Sciences at Cornell. The authors disclose that we have reported all experiments, conditions, data exclusions, and steps to determine sample sizes. A replication package is available at https://doi.org/10.6077/e8ch-fv97. Additional material and links to this information have been included throughout the article.