The Provision of Public Goods with Positive GroupInterdependencies

This article examines the nature of human behavior in a nested socialdilemma referred to as the Spillover Game. Players are divided into twogroups with positive production interdependencies. Based on theoreticallyderived opportunistic, local, and global optima, our experimental resultsdemonstrate the importance of in-group beneficiaries over global efficiency.We find that the observed behavior is primarily determined by an imperfectconditional cooperation that prioritizes local level feedback.[...]