Le modèle standard de concurrence avec antisélection en assurance (Rothschild et Stiglitz) suppose que les types ne diffèrent que par leur probabilité d’accident. Supposant qu’ils puissent aussi différer par leur attitude face au risque, nous mettons en évidence des configurations...

Pour une entreprise, le maintien d’une croissance soutenue pendant une longue période est délicat. Il suppose, outre des conditions de marché favorables, un pilotage du rythme de développement adapté aux contraintes financières.

Dans ce papier, nous chercherons à comprendre, au-delà de ses fonctions techniques, comment les procédures d’investissement permettent d’institutionnaliser les grands idéaux et discours ayant trait à l’investissement. En analysant, dans le contexte français, les procédures...

Dans le cadre d'un modèle à générations imbriquées, nous supposons que la gestion d'une ressource renouvelable correspond à l'émission de quotas d'exploitation transférables. Chaque agent a la possibilité d'utiliser les quotas dans la production ou de les vendre à la génération...

This paper studies the effect of combining different insurance schemes on the efficiency of consumption smoothing in an environment without commitment. A savings account is introduced into the self-enforcing risk-sharing model of Thomas and Worrall (1988). The risk averse agent's savings play...

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...

We propose a task for eliciting attitudes towards risk that is close to real world risky decisions which typically involve gains and losses. The task consists of accepting or rejecting gambles that provide a gain with probability p and a loss with probability 1 − p. We employ finite mixture...

A theory of incomplete preferences under uncertainty is proposed, according to which a decision maker's preferences are indeterminate if and only if her confidence in the relevant beliefs does not match up to the stakes involved in the decision. We use the model of confidence in beliefs...

One apparent reason for deferring a decision – abstaining from choosing, leaving the decision open to be taken by someone else, one’s later self, or nature – is for lack of sufficient confidence in the relevant beliefs. This paper develops an axiomatic theory of decision in situations...