This paper analyses the implications of basic tests for lotteries on the probability weighting function w(p). We first show that the three standard tests for lottery choices imply that the w(p) function has a S-shape (first concave then convex) but is not regressive. For the pricing of lotteries...

Le but de cet article est de fournir les outils necessaires a la determination des prix et des quantites d'equilibre fournis par un marche compose de N individus.

Recently, Caballi and Pomansky (1996) proposed a formal definition of mixed risk aversion and characterized stochastic dominance in presence of such utility functions. However they did not study comparative mixed risk aversion. In this note we give a sufficient condition for analytic comparative...

In this paper we show how a shift in a return distribution affects the composition of an optimal portfolio in the case of one riskless asset and two risky assets. We obtain that, in general, such a shift modifies the composition of the mutual fund. We also show that the separating conditions...

Information problems have a large role to play in insurance markets and the regulations governing these markets were in part designed to take such problems into account. Classification variables are usually the tools used to reduce adverse selection, whereas bonus-malus (or merit-rating) schemes...

In this survey we present some of the more significant results in the literature on adverse selection in insurance markets. Sections 1 and 2 introduce the subject and section 3 discusses the monopoly model developed by Stiglitz (1977) for the case of single-period contracts and extended by many...

In this paper, we propose an empirical analysis of the presence of adverse selection in an insurance market. We first present a theroetical model of a market with adverse selection and we introduce different issues related to transaction costs, accident costs, risk aversion and moral hazard. We...

We study the interaction between leverage, employment structure and compensation policies within firms.

Nous abordons la difficile question de la mesure empirique des effets des problemes d'information sur l'allocation des ressources. Deux problemes retiennent notre attention; le risque moral et l'antiselection.

How does risk aversion affect choices when expenses improve probabilities? Attempts tp answer this question in the literature found an endogenous switching probability. In this paper we introduce a new concept of comparative attitude to risk, namely proper risk behavior and determine 1/2 as the...