If the allocation of a differential information economy are defined as incentive compatible state - contingent lotteries over consumption goods, competitive equilibrium allocations exist and belong to the (ex ante incentive) core. Furthermore, any competitive equilibrium allocation can be viewed...

Using a formal propositional language with operators "individual i assigns probability at least a" for countable many a, we devise an axiom system which is sound and complete with respect to the class of type spaces in the sense of Harsanyi (1967-68). A crucial axiom requires that degrees of...

This paper examines how the first-best models of compensation based on the agents' talents and responsabilities analyzed in some recent contributions can be extended to a second-best context. A few social criteria are proposed and compared to alternative approaches by Roemer and Van de gaer.

Under Cournot and Bertrand cases, cartel stability is investigated in a context of adverse selection, where consumers are imperfectly informed about the products quality. Producers' collusion may be necessary to signal quality via a third-party certification or a price. In particular, cases with...

The paper studies a behavioral learning process where an agent plays, at each period, an action with a probability which is proportional to the cumulative utility he got in the past with that action. The so-called CPR learning rule and the dynamic process it induces are formally stated and...

The author is interested in whether it is worth producing information, th rough surveys, in order to design a quality regulation mechanism when dealing with public services. He studies a principal-agent-users model in which quality is jointly produced by both the agent and the users thanks to...

The paper explores the uniqueness properties of the subjective probabilities in two axiomatizations of state-dependent preferences. Karni, Schmeider and Vind's (KSV) system depends on selecting an arbitrary probability, ans as such, does not guarantee the uniqueness of the derived subjective...

We first introduce in this paper the basic bottleneck model with one origin, one destination and one link. There exists an equilibrium for the time of usage. Then we introduce several day-to-day adjustment processes and discuss convergence. Convergence depends on key parameters. In particular we...

This chapter discusses various technical constructions and philosophical interpretations of utility theory with a view of establishing its relevance to social ethics.

L'heterogeneite inexpliquee dans les modeles statistiques peut etre etudiee a partir d'un systeme mixte de lois conditionnelles a des composantes d'heterogeneite, et d'une famille de lois sur ces composantes. Dans le cas scalaire on calcule le score par rapport a la variance de la composante, et...