文章基本信息

标题：Superstars Need Social Benefits: An Experiment on Network Formation
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作者：van Leeuwen ; Boris ; Theo Offerman 等
期刊名称：CREED Working Papers / Center for Research in Experimental Economics and Political Decision-Making
出版年度：2013
出版社：Amsterdam
摘要：We investigate contributions to the provision of public goods on a network when efficient provision requires the formation of a star network. We provide a theoretical analysis and study behavior in a controlled laboratory experiment. In a 2x2 design, we examine the effects of group size and the presence of (social) benefits for incoming links. We find that social benefits are highly important. They facilitate convergence to equilibrium networks and enhance the stability and efficiency of the outcome. Moreover, in large groups social benefits encourage the formation of superstars: star networks in which the core contributes more than expected in the stage-game equilibrium. We show that this result is predicted by a repeated game equilibrium.