Islamic fundamentalists and their secular opponents recognize that the decision of women to cover their head in public generates social pressures to conform on those wishing to remain unveiled. This article identifies the essence of social coordination problems generated by this type of...

In this article I characterize Nash equilibria of large anonymous games by providing the following necessary and sufficient condition for an equilibrium distribution. For no subset K of actions more players play actions in K than have a best response in K to the given distribution. While...