We examine in this paper the effect of an early resolution of uncertainty on savings. We show that this effect is in general ambiguous. We provide necessary and sufficient conditions on the utility function which guarantee that an early resolution of uncertainty reduces current savings for...

La litterature sur les decisions d'investissement en incertitude a largement souligne l'interet de reporter la mise en oeuvre des investissements les plus risques en attendant l'arrivee de nouvelles informations sur leurs rentabilites. Nous utilisons le modele standard de choix de portefeuille...

The paper reviews some recent theoretical contributions on the modelisation of time-inconsistent preferences, as well as implications for individual behavior. The focus is on the interpretation of the concepts and the link with concepts in psychology.

We show that a regulator can use diffuse information held by potential entrants in the market as a powerful incentive instrument even when neither government tranfers to firms nor the regulation of entrants is permitted. Optimal regulation involves a menu of price caps and price floors. The...

Consider an agent facing a risky distribution of losses who can change this distribution by exerting some effort. Should be exert more effort when he becomes more risk-averse? For instance, should we expect more risk-averse drivers to drive more cautiously? In this paper, we give sufficient...

We investigate in this paper the attitude towards risk of bettors in British horce races. The model we use allows us to go beyond the expected utility framework and to explore various alternative proposals by estimating a multinomial model on 34443-race dataset. We find that rank-dependant...

We examine an important class of decision problem under uncertainty that entails the standarrd portfolio problem and the demand for coinsurance. The agent faces a controllable risk -his demand for a risky asset for example- and a background risk. We determine how a change in the distribution in...