This paper focuses on implementation issues in environments where it may be costly for the players to send certain messages. We develop an approach allowing to characterize the set of implementable outcomes in such environments, and then apply it to derive optimal mechanisms. The key elements of...

In this paper we study "investment tournaments," a class of decision problems that involve gradual allocation of investment among several alternatives whose values are subject to exogenous shocks. The decision-maker's payoff is determined by the final values of the alternatives. An important...

We investigate the issue of implementation via individually rational ex-post budget-balanced Bayesian mechanisms. We show that all decision rules generating a nonnegative expected social surplus are implementable if and only if the probability distribution of the agents' types satisfies two...

In this paper we study "investment tournaments," a class of decision problems that involve gradual allocation of investment among several alternatives whose values are subject to exogenous shocks. The decision-maker's payoff is determined by the final values of the alternatives. An important...

We study the interaction between productive investment and persuasion activities in a principal-agent setting with strategic disclosure. In an attempt to persuade the principal, the agent diverts substantial resources from productive activities to information acquisition for persuasion, even...