We study repeated implementation in a model with overlapping generations of agents.It is assumed that the preferences of agents do not change during their lifetime.A social choice function selects an alternative in each period as a function of the preferences of agents who are alive in that...

A competition authority has an objective, which specifies what output profile firms need to produce as a function of production costs. These costs change over time and are only known by the firms. The objective is implementable if inequilibrium, the firms cannot collude on their reports to the...

At each moment in time, some alternative from a finite set is selected by a dynamic process. Players observe the alternative selected and sequentially cast a yes or a no vote. If the set of players casting a yes-vote is decisive for the alternative in question, the alternative is accepted and...

We analyze dynamic electoral competition policy changes. The costs of changing a policy increase with the extent of the shift and generate an incumbency advantage. We characterize the dynamics of Markov equilibria in terms of history and party polarization, and analyze how policies are...

I consider a standard implementation problem under complete information when agents have a minimal degree of honesty. In particular, I assume that agents are white lie averse: they strictly prefer to tell the truth whenever lying has no effect on their material payoff. I show that if there are...

We investigate implementation of social choice functions with asymmetric information concerning the state from epistemological perspectives. While each agent is either selfish or honest, they do not expect other participants to be honest. Nevertheless, an honest agent may exist, not among the...

A group of N individuals must choose between two collective alternatives. Under Quadratic Voting (QV), agents buy votes in favor of their preferred alternative from a clearing house, paying the square of the number of votes purchased; the sum of all votes purchased determines the outcome. We...

Mechanisms that are used to characterize Nash implementable social choice correspondences (SCC) have unattractive features since they have to cover every instances of the implementation problem. This is unavoidable, as there are infinitely many cases, but at the same time it leaves open whether...

This study considers Nash implementation in the problem of selecting an alternative when an agent has single-peaked preferences. We investigate condition μ (Moore and Repullo, 1990) and condition μ2 (Moore and Repullo, 1990; Dutta and Sen, 1991), which are necessary and sufficient conditions for...

We study a social choice model with partially honest agents, and we show that strategy-proofness is a necessary and sufficient condition to achieve secure implementation. This result provides a behavioral foundation for the rectangularity property; and it offers as a by-product a revelation...