Cet article analyse les politiques de réglementation et d'achat public sur plusieurs périodes en présence d'asymétrie d'information entre le régulateur et les entreprises réglementées. Le cadre général de Laffont et Tirole est utilisé. Nous proposons une analyse graphique du modèle de...

Dans l'analyse des problèmes d'antisélection en assurance, on suppose généralement que la richesse des individus est une variable aléqtoire binaire, selon que l'individu subit ou non une perte. Ceci interdit d'analyser la forme du contrat d'assurance partielle destiné aux individus à...

This paper analyzes the efficient use of information in an agency relationship with moral hazard, when parties are risk-neutral. We show that, given an arbitrary information system, all relevant information from a mechanism-design point of view can be summarized by a binary statistic. We then...

We argue that the common-law standard of proof, given the rules of evidence, does not minimize expected error as usually argued in the legal literature, but may well be efficient from the standpoint of providing maximal incentives for socially desirable behavior. By contrast, civil law's higher...

I examine the case where fulfillment of a contractual commitment is only imperfectly verifiable and ask whether the court should then "tell the truth" regarding the action in dispute. I show that truth seeking does not maximize the expected surplus from contractual relationships. From the...

Two firms produce a product with a horizontal and a vertical characteristic. We call the vertical characteristic quality. The difference in the quality levels determines how the firms share the market. Firms know the quality levels, consumers do not. Under non-comparative advertising a firm may...