This paper presents an axiomatic model of decision making which incorporates objective but imprecise information. We axiomatize a decision criterion of the multiple priors (or maxmin expected utility) type. The model achieves two primary objectives. First, it explains how subjective belief...

We provide a model of decision making under uncertainty in which the decision maker reacts to imprecision of the available data. Data is represented by a set of probability distributions. We axiomatize a decision criterion of the maxmin expected utility type, in which the revealed set of priors...

We provide a general theorem on the aggregation of preferences under uncertainty. We study, in the Anscombe-Aumann setting a wide class of preferences that includes most known models of decision under uncertainty (and state-dependent versions of these models). We prove that aggregation is...

This paper analyses a transboundary pollution problem between two countries and studies the efficiency comparison of uniform versus differentiated abatement standards when there are imperfect transfers between countries. To achieve this goal, we use a negotiation game and the Nash bargaining...

The question at stake is that of the theoretical representation of marketable permits. The setting up of such markets to regulate pollution problems is justified by constant reference to the efficiency of market coordination. Indeed, Montgomery established in 1972 the existence of an efficient...

Usually, an economic good isn't available gratuitously, but the case of information goods and services (IGS) is specific. Their intrinsic properties allow zero prices that is unconceivable for the others economic private goods. The gratuitousness is not the aim of productive activity ; it...

On the example of a pure-exchange financial economy with two periods, incomplete nominal asset markets and differential information of the adverse selection's type, Cornet-De Boisdeffre (2002) introduced refined concepts of price, arbitrage and a so-called «no-arbitrage equilibrium», which...

This Working Paper deals with the progresses, but also with the deficiencies, of the Cuban revolution in the economic field, until the recent de-dollarization. It underlines its economic challenges at the beginning of the XXIst century, as well as its internal forces and external opportunities...

This paper gives some insights related to the combination of exploration and exploitation behaviors. A recurrent question for firms deals with this blend of exploration and exploitation mechanisms. Firms are engaged in new activities like research and at the same time in more routine ones like...

In this paper, we examine the effect of a decrease in risk on the demand for risky asset in the standard portfolio problem. We introduce a new class of dominance, that we name relative order and we prove that this class of dominance is consistent both with central dominance introduced by Gollier...