We argue that a social norm and the coordination of behavior within social groups can be expressed by a correlated equilibrium. Given a social group structure (a partition of individuals into social groups), we propose four conditions that one may expect of a correlated equilibrium consistent...

In a classic model of tax competition, this paper shows that the level of public good provision and taxation in a decentralized equilibrium can be efficient or inefficient with either too much or too little public good provision. The key is whether there exists a unilateral incentive to deviate...

Thanks. Copyright 2008 Blackwell Publishing, Inc..