A team must select among competing projects that differ in their payoff consequences for its members. Each agent chooses a project and exerts costly effort affecting its random completion time. When one or more projects are complete, agents bargain over which one to implement. A consensus...

In this paper we combine a non-cooperative decision-making game in a federal structure with two levels of interest and an incomplete contract which sets the rules of the game. The question we pose is how to combine ex ante efficiency of the design with ex post efficiency of the outcomes in the...

The decision-making rules of the European Union (EU) are defined in an incomplete contract signed by 15 national governments. The design of the contract defines the set of policy issues where it applies – in decision-making rules i.e. the majority rules and the division of powers among the...

People with a self-control problem often seek relief through social interactions rather than binding commitments. Thus, in self-help groups like Alcoholics Anonymous, Narcotics Anonymous etc, members are said to achieve better personal outcomes by mainly sharing their experiences. In other...

We present a dynamic model of sequential information acquisition by a heterogeneous committee. At each date agents decide whether to vote to adopt one of two alternatives or continue to collect more information. The process stops when a qualified majority vote for an alternative. Three main...

Decentralization can lead to "good" or "bad" outcomes depending on the socio-cultural norms of the targeted communities. We investigate this issue by looking at the evolution of familism and nepotism in the Italian academia before and after the 1998 reform, which decentralized the recruitment of...

We analyze costly information acquisition and information revelation in groups in a dynamic setting. Even when group members have perfectly aligned interests the group may inefficiently delay decisions. When deadlines are far away, uninformed group members freeride on each others' efforts to...

In a Hotelling duopoly model, we introduce quality that is more appreciated by closer consumers. Then higher common quality raises equilibrium prices, in contrast to the standard neutrality result. Furthermore, we allow consumers to buy one out of two goods (single-purchase) or both...

We develop a simple theory which formally describes how charities can resolve the information asymmetry problems faced by small donors by working with large donors to generate quality signals. To test the model, we conducted two large-scale natural field experiments. In the first experiment, a...

We introduce endogenous political parties into the Hotelling-Downs voting framework to model the selection of candidates. First, activists choose which party to join, if at all. Second, party members select a champion for the general election. Third, the electorate median voter determines the...