The private and social efficiency of two "behavioral" coordination mechanisms is examined in this paper. In Cournot oligopoly, firms prefer immediate coordination on the Nash equilibrium (interpreted as a preplay communication) over the best-reply dynamics (and fictitious play) which converge to...

Models of the microfoundations of nominal price rigidities show that in the absence of real rigidities, individual firms have strong incentives to adjust prices even if other firms do not: price rigidity is not a Nash equilibrium unless the fixed cost of adjusting prices is implausibly high....

We study the strategic behavior of voters in a model of proportional representation, in which the policy space is multidimensional. Our main finding is that in large electorate, under some assumptions on voters'preferences, voters essentially vote, in any equilibrium, only for the extreme parties.

Comparative advantage motivates large trade flows in feeder animals throughout the world. Trade creates externalities when animal diseases can spread beyond the purchasing farm. When growers can choose between open and closed production systems, Nash equilibrium will likely involve socially...

This paper develops a dynamic evolutionary model in which agents make choices on the basis of relative performance criteria. We distinguish two classes of learned behavior: imitative dynamics and a new class of dynamics, "introspective dynamics." Under imitative dynamics, agents compare payoffs...