In an economy with asymmetric information, Rational Expectations Equilibria (REE) need not become asymptotically incentive compatible, even if many independent replicas of the economy are merged together. We identify a sub-class of REE for which this is nevertheless the case. It consists of...

We provide a definition of the rational expectations core in an atomless economy with asset markets and show that allocations in the core can be decentralized by a system of asset and spot prices as rational expectations equilibria.

In technology adoption, herd behaviour can lead to a suboptimal outcome. An example is given by Choi (1997): it is a model of technology choice under uncertainty where herding arises because of strategic complementarities and risk aversion. It causes a positive experimenting bias against the...

This paper attemps to identify, in a framework deliberately stripped of unnecessary technical- ities, some of the basic reasons why adaptive learning may or may not lead to stability and convergence to self-fulfilling expectations in large socioeconomic systems where no agent, or collection of...

This paper attempts to identify, in a framework deliberately stripped of unnecessary technicalities, some of the basic reasons why adaptative learning may or may not lead to stability and convergence to self-fulfilling expectations in large socioeconomic systems where no agent, or collection of...

La publication tous les trois ans des enquêtes PISA1 offre un cadre d’analyse plus qu’intéressant en matière de politiques éducatives. Alors que les résultats de l’enquête PISA 2012 sont disponibles depuis décembre 2013, il convient de revenir sur les principaux enseignements que...

This paper presents an overlapping generations model of environmental externalities with a depollution technology. We show that if an agent is sufficiently risk averse, voluntary contribution is a decreasing function of average efficiency of depollution technology. If on the contrary, the...

I consider a two period model with an incumbent firm and a potential entrant each of whom produces a homogeneous good. There is a demand uncertainty and the information regarding the demand is asymmetric: the incumbent possesses private information concerning the state of demand while the...

The competitive equilibrium correspondence, which associates equilibrium prices of commodities and assets with allocations of endowments, identifies the preferences and beliefs of individuals under uncertainty; this is the case even if the asset market is incomplete.

This paper presents an overlapping generations model of environmental externalities with a depollution technology. Each agent concerned by the environmental degradation can voluntarily contribute in order to reduce it. Contributing to the environmental quality means financing depollution...