We study the role of an enforcer in the effectiveness of selective incentives in solving the collective action problem when groups take part in a contest. Cost functions exhibit constant elasticity of marginal effort costs. If prize valuations are homogeneous, our source of heterogeneity induces...

Substantial evidence has accumulated in recent empirical works on the limited ability of the Nash equilibrium to rationalize observed behavior in many classes of games played by experimental subjects. This realization has led to several attempts aimed at finding tractable equilibrium concepts...

Governments often pursue procyclical fiscal policies, even though they reduce voter welfare. Is this because voters actually prefer procyclical policies? The analysis in this paper exploits the first individual-level evidence from an original survey of 12,000 respondents in 8 countries across...