Centrality and cooperation in networks
实验研究了网络中心性对群体合作的影响，发现当允许排除成员时，中心玩家贡献显著减少，但其他成员容忍这种行为，从而维持了高合作水平。
Abstract We investigate the effects of centrality on cooperation in groups. Players with centrality keep a group together by having a pivotal position in a network. In some of our experimental treatments, players can vote to exclude others and prevent them from further participation in the group. We find that, in the presence of exclusion, central players contribute significantly less than others, and that this is tolerated by those others. Because of this tolerance, groups with centrality manage to maintain high levels of cooperation.