Most important results in Social Choice Theory concern impossibility theorems. They claim that no function, as complex as it might be, can satisfy simultaneously a restricted number of fair properties describing a democratic system. However, adopting new voting ideas can push back those limits....

The official results analysis of the Congolese presidential elections in 2011 aims at studying behavior displayed by voters towards the selected mode of poll. This reveals that most of them carry out a strategic vote because feeling, in an intuitive way, weaknesses of a single member voting...

This paper studies allocation correspondences in the house allocation problems with collective initial endowments. We examine the implications of two axioms, namely 'consistency' and 'unanimity.' Consistency requires the allocation correspondence be invariant under reductions of population....

We study a Baron-Ferejohn (1989) type of bargaining model to which we append an investment stage. As long as no agreement is reached, a new proposer is selected randomly from the player set. A proposal is accepted if at least q players accept it. Prior to the bargaining stage, players may make...

Strategy-proofness (SP) is a sought-after property in social choice functions because it ensures that agents have no incentive to misrepresent their private information at both the interim and ex post stages. Group strategy-proofness (GSP), however, is a notion that is applied to the ex post...

We provide three alternative characterizations of the proportional solution defined on compact and comprehensive bargaining problems with claims that are not necessarily convex. One characterization result is obtained by using, together with other standard axioms, two solidarity axioms. Another...

This paper analyzes the a priori influence of the European Parliament (EP) and the Council of Ministers (CM) on legislation of the European Union adopted under its codecision procedure. In contrast to studies which use conventional power indices, both institutions are assumed to act...

Existing work on the costs of insecure property has largely focused on the overexploitation problem of common pool resources. We investigate other costs of insecure resources - uncertainty costs, the absence of exchange, and enforcement costs - within a simple general equilibrium setting.

The belief that equality of demand and supply determines price and clears the market is universal. Shockingly, this belief is unfounded. It contradicts macro’s claim that equality of demand and supply determines output. It contradicts (new) monetary theory, which claims that equality of demand...

This paper combines partner matching with an intra-household allocation model where couples decide if they want to marry or cohabitate. Marriage encourages but does not ensure a higher level of spousal commitment, which in turn can generate a larger marital surplus. Individuals’ marital...