The two-fund separation theorem from static portofolio analysis generalizes to dynamic Lucas-style asset models only whern a consol is present. If all bonds have finite maturity and do not span the consol, then equilibrium will deviate, often significantly, from two-fund separation even with the...

For a club such as the European Union, an important question is when, and under which conditions, a subset of the members should be allowed to form inner clubs and enhance cooperation. Flexible cooperation allows members to participate if and only if they benefit, but it generates a freerider...

This paper considers an environment where two principals sequentially contract with a common agent and studies the exchange of information between the two bilateral relationships. We show that when (a) the upstream principal is not personally interested in the decisions taken by the downstream...

We study the relationship between a player's (stage game) minmax payoff and the individually rational payoff in repeated games with imperfect monitoring. We characterize the signal structures under which these two payoffs coincide for any payoff matrix. Under a full rank assumption, we further...

In models of non-deterministic contest, players exert irreversible effort in order to increase their probability of winning a prize. The most prominent functional form of the win probability in the literature is the so-called logit" contest success function. We provide a simple micro-foundation...

This paper proposes a model of decision under ambiguity deemed vector expected utility, or VEU. In this model, an uncertain prospect, or Savage act, is assessed according to (a) a baseline expected-utility evaluation, and (b) an adjustment that reflects the individual's perception of ambiguity...

We consider an example of a Markov game with lack of information on one side, that was .rst introduced by Renault (2002). We compute both the value and optimal strategies for a range of parameter values.

This paper develops a general methodology for characterizing the dynamic evolution of preferences in a wide class of strategic interactions. We give simple conditions characterizing the limiting distribution of preferences in general games, and apply our results to study the evolutionary...