It is an important issue for economic and finance applications to determine whether individuals exhibit a behavioral bias toward pessimism in their beliefs, in a lottery or more generally in an investment opportunities framework. In this paper, we analyze the answers of a sample of 1,540...

We study the deterministic optimization problem of a profit-maximizing firm which plans its sales/production schedule. The firm controls both its production and sales rates and knows the revenue associated to a given level of sales, as well as its production and storage costs. The revenue and...

In this paper we study the stability (in the L <Superscript> p </Superscript> as well as for the almost sure convergence sense) of the optimal investment-consumption strategy with respect to the choice of the utility function. Copyright Springer-Verlag Berlin/Heidelberg 2004

We address the problem of a social planner who, as in Weitzman, (2001), gathers data on experts' discount rates and wants to infer the social consumption discount rate. We propose an equilibrium approach and we analyze the expression and the properties of the resulting equilibrium discount rate....

We study comparative statics of Nth-degree risk increases within a large class of problems that involve bidimensional payoffs and additive or multiplicative risks. We establish necessary and sufficient conditions for unambiguous impact of Nth-degree risk increases on optimal decision making. We...

[eng] Derivatives, prudential monitoring and regulation. The recent losses linked to the use of derivatives reveal monitoring problems of these operations within corporations and financial institutions. The growing complexity of these products, subject to permanent innovation, makes them...

The aim of this paper is to analyse the impact of heterogeneous beliefs in an otherwise standard competitive complete market economy. The construction of a consensus probability belief, as well as a consensus consumer, is shown to be valid modulo an aggregation bias, which takes the form of a...

ln this paper we establish an index formula for a marginal pricing production economy and we prove the uniqueness of the equilibrium under a monotonicity assumption on the excess demand function and the local second order sufficient conditions for profit maximization. Our result generalizes the...