Cet article propose un panorama critique de la litterature empirique, recente ou plus ancienne, consacree a l'hypothese d'alea moral, selon laquelle une couverture maladie plus complete conduirait a davantage de depenses.

This paper studies optimality in dynamic stochastic economies with finitely lived agents. In this set up, an agent's utility level depends on the date at which it is evaluated, and on the available information at that date. A family of Pareto optimality concepts may be defined accordingly, with...

This paper discusses experimental design from an efficiency viewpoint. We interpret the design of social experiments as an economic intertemporal consumpion problem, as opposed to a statistical variance minimization problem, and contrast the difference between Pareto optimal sample size and...

In a prevailing climate of increasing uncertainty (rising risk of unemployment, pension funding problems and unstable family structures), French households have adopted new saving behavior reflected during the nineties, primarily by considerable investment in life insurance and its derivative...

Les lois de conservation restent peu utilisees en economie. Cette note offre une nouvelle version du theoreme de Noether adaptee au contrat optimal, methode d'optimisation dynamique la plus souvent retenue en economie theorique. Ce theoreme permet de determiner des quantites invariantes le long...

The paper discusses the concept of "expectational market failures" ; it attempts to assess the scope for Government intervention aiming at stabilizing economic agents' expectations. The Rational Expectations Hypothesis, "evolutive" and "eductive" learning credibility, "indicative Planning",...