Directed Altruism and Enforced Reciprocity in Social Networks: How Much is A Friend Worth?
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We conduct field experiments in a large real-world social network to examine why decision makers treat friends more generously than strangers. Subjects are asked to divide surplus between themselves and named partners at various social distances, where only one of the decisions is implemented. In
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美国国家经济研究局创建时间：
2007-05-01
