Allocations familiales et autres transferts cibles sont generalement verses aux meres, sur la base de l`observation qu`augmenter la part des ressources controlees par les meres conduit a ameliorer le bien-etre des enfants. Nous recensons un ensemble de resultats empiriques qui etablisent le...

This paper is concerned with the incentive properties of the Matthew Effect by which since Merton [1968] one is usually describing the various cumulative advantages that obviously affect academic competition. We introduce a model of sequential contests in which the agents that have initially...

We consider a dynamic version of sender-receiver games, where the sequence of states follows an irreducible Markov chain observed by the sender. Under mild assumptions, we provide a simple characterization of the limit set of equilibrium payoffs, as players become very patient. Under these...

Nous considérons la vente aux enchères sous pli scellé au second prix d'un objet que chaque acquéreur potentiel évalue de manière « privée et indépendante ». Nous montrons que l'optimum ex ante d'un cartel, sous contraintes d'incitation et d'équilibre ex post des transferts, coïncide...

(VF)L’objectif de cet article est d’essayer de comprendre pourquoi certaines entreprises sont amenées à renégocier leurs contrats d’externalisation. Notre postulat de départ est que le nombre de renégociations augmente avec le temps écoulé depuis la signature du contrat. Nous...

In the 1970s, Thomas C. Schelling proposed a model which claimed to show that a high degree of spatial segregation can result from individual preferences which do not in themselves aim to achieve such a degree of collective segregation. A perverse effect seems therefore to occur. However, the...

We study the development of a duopoly industry -evolution of firm capacities and competitive behavior- in a continuous-time real-options model of capacity investment. Our methodology allows the evaluation of investment options and exercise rules in a strategic setup. In the initial industry...

We study a simple duopoly model of preemption with multiple investments and instantaneous Bertrand competition in a stochastically growing market. Different patterns of equilibria may arise, depending on the importance of the real option effect. If the average growth rate of the market is close...

This paper is an attempt to analyze regulation in LDCs taking into account their specificities compared to developed countries. By using a regulation model with an imperfect contract enforcement mechanism, we show how the separation of powers improves the enforcement quality and social welfare...