A mechanism is pairwise strategy-proof if groups of size one and two never have an incentive to manipulate. When agents have strict preferences over their own outcomes, I show that pairwise strategy-proofness even eliminates incentives for any group of agents to manipulate, therefore implying group strategy-proofness. It is also equivalent to Maskin monotonicity. I obtain the equivalence result...

In this note we define generalized monotonicity which is a generalized version of monotonicity due to Muller and Satterthwaite (1979) for a social choice function under individual preferences which permit indifference, and shall show that generalized monotonicity and strategy−proofness are equivalent. I would like to thank Bhaskar Dutta and the anonymous referee for helpful comments. Citation: ...

We study dominant strategy implementation especially in economic environments. Wefirst show that in general environments, strategy-proofness and quasi-strong-non-bossiness together are necessary and sufficient for dominant strategy implementation via the associated direct revelationmechanism. Wenext prove that in weak separable environments, strategy-proofness is sufficient for dominant strateg...

This paper studies the relation between Bayesian mechanism design and the Ramsey-Boiteux approach to the provision and pricing of excludable public goods. For a large economy with private information about individual preferences, the two approaches are shown to be equivalent if and only if, in addition to incentive compatibility and participation constraints, the …nal allocation of private-good...

Despite the truthful dominant strategy, participants in strategy-proof mechanisms submit manipulated preferences. In our model, dislike rejections and enjoy confirmation from getting what they declare desirable. Formally, payoff a match decreases its position submitted ranking such that strategic trade-off between preference intensity probability arises. This can trigger commonly observed self-...

In this paper we consider the exogenous indifference classes model of Barberá and Ehlers (2011) and Sato (2009) and analyze further the relationship between the structure of indifference classes across agents and dictatorship results. The key to our approach is the pairwise partition graph. We provide necessary conditions on these graphs for strategy-proofness and unanimity (or efficiency) to i...