Incomplete information games, local interaction games and random matching games are all special cases of a general class of interaction games (Morris (1997)). In this paper, we use this equivalence to present a unified treatment of arguments generating uniqueness in games with strategic...

Common knowledge plays an important role in coordination problems and coordination problems are central to many areas of economic policy. In this paper, I review some common knowledge puzzles culminating in the electronic mail game. These puzzles may seem distant from practical concerns....

In a simple model of currency crises caused by creditor coordination failure, we show that bailouts that reduce ex post inefficiency will sometimes create ex ante moral hazard but will sometimes enhance the incentives for governments to take preventative actions. This model helps us understand a...

This paper introduces generalized potential functions of complete information games and studies the robustness of sets of equilibria to incomplete information. A set of equilibria of a complete information game is robust if every incomplete information game where payoffs are almost always given...

What are the welfare effects of enhanced dissemination of public information through the media and disclosures by market participants with high public visibility? For instance, is it always desirable to have frequent and timely publications of economic statistics by government agencies and the...

An informed advisor wishes to convey her valuable information to an uninformed decision maker with identical preferences. Thus she has a current incentive to truthfully reveal her information. But if the decision maker thinks that the advisor might be biased in favor of one decision and the...

If policy makers in developing countries pursue "bad" economic policies, policy conditionality may provide financial leverage which induces them not to choose these policies. When is such policy conditionality beneficial? We point out that whether conditionality has a beneficial short run impact...

In a static economy with symmetric information, the informational requirements for competitive equilibrium are very weak: markets clear and each agent is rational. With asymmetric information, the solution concept of competitive equilibrium has been generalized to rational expectations...

We study games with strategic complementarities, arbitrary numbers of players and actions, and slightly noisy payoff signals. We prove limit uniqueness: as the signal noise vanishes, the game has a unique strategy profile that survives iterative dominance. This generalizes a result of Carlsson...

Incomplete information, local interaction and random matching games all share a common structure. A type or player interacts with various subsets of the set of all types/players. A type/player's total payoff is additive in the payoffs from these various interactions. This paper describes a...