Consider a setting in which several groups of individuals with common interests (“clubs”) compete with each other for recognition by other individuals. Depending on the context, recognition may be expressed by these other individuals joining a club, or choosing one club to admire. Clubs...

How should we evaluate the welfare implications of improvements to safety technologies in the presence of offsetting behavior? We model this problem as a symmetric game in which each player’s payoff depends on his own action and the average action of the other players, and analyze under which...

We analyze a theoretical model in which entrepreneurs’ property rights are threatened by “raiders” who can challenge them to a contest for control of their firms. Entrepreneurs have heterogeneous productivity, and decide how much capital to invest before raiders decide whom to attack. In...

Consider a setting in which several groups of individuals with common interests ("clubs") compete with each other for recognition by other individuals. Depending on the context, recognition may be expressed by these other individuals joining a club, or choosing one club to admire. Clubs compete...

How does electoral accountability affect the effectiveness of terrorism prevention in a democ- racy? We analyze the connection between electoral accountability and policy effectiveness in the context of terrorism prevention. We develop a formal model of an interaction between a government, a...