This paper studies full implementation problems in (pure and mixed) Nash equilibrium in finite environments. We restrict the designer to adopt<I>finite</I> mechanisms, thus ruling out integer games. We provide a condition, top-<I>D</I> inclusiveness, that together with set-monotonicity is sufficient for mixed...</i></i>

This paper analyzes collective outcomes in games from a revealed preference perspective. A collective choice function is rationalizable if there are such “rational” individual preferences, that the observed choices are the only equilibria. We consider a generalized concept of Nash...

A partially-honest individual is a person who follows the maxim, "Do not lie if you do not have to" to serve your material interest. By assuming that the mechanism designer knows that there is at least one partially-honest individual in a society of n ≥ 3 individuals, a social choice rule...

We consider a model where policy motivated citizens vote in two simultaneous elections, one for the President who is elected by majority rule, in a single national district, and one for the Congressmen, each of whom is elected by majority rule in a local district. The policy to be implemented...

In a society composed of a ruler and its citizens: what are the determinants of the political equilibrium between these two? This paper approaches this problem as a game played between a ruler who has to decide the distribution of the aggregate income and a group of agents/citizens who have the...

This paper considers the object allocation problem introduced by Shapley and Scarf (1974). We study secure implementation (Saijo, Sjöström, and Yamato, 2007), that is, double implementation in dominant strategy and Nash equilibria. We prove that (i) an individually rational solution is...

We consider the problem of allocating infinitely divisible commodities among a group of agents. Especially, we focus on the case where there are several commodities to be allocated, and agents have continuous, strictly convex, and separable preferences. In this paper, we establish that the...

We study Downsian competition in a Mirrleesian model of income taxation. The competing politicians may differ in competence. If politicians engage in vote-share maximization, the less competent politician's policy proposals are attractive to the minority of rich agents, whereas those of the...

This paper examines the chance of winning a Tullock-contest when participants differ in both their talent and their attitude towards risk. For the case of CARA preferences, it is shown that the winning probability may be higher for a low-skilled agent with a low degree of risk aversion than for...