We reformulate Grandmont's and its successors' notion of behavioral heterogeneity such as to get the exact insensitivity of the aggregate budget share function with respect to changes in prices and income, instead of a mere approximate insensitivity. We propose a non parametric set-up such that,...

In the development of the general equilibrium theories, Hicks and Allais played an essential role. We are studying here the contributions which were theirs respectively in Value and Capital (1939) and in the Traité d’économie pure (1943). The accent is put on three points: the theory of...

Short lived arbitrage opportunities arise when prices adjust with a lag to new information. They are toxic because they expose dealers to the risk of trading at stale quotes. Hence, theory implies that more frequent toxic arbitrage opportunities and a faster arbitrageurs' response to these...

We study the impact of induced positive or negative emotions on economic decisions in a negotiation context. Decision was assessed with a well studied social task, the Ultimatum game. In this task, subjects had to make decisions to either accept or reject fair or unfair offers from other...

French Abstract: Nous introduisons un modèle stratégique de négociations à deux joueurs avec des preferences dans le risque de type utilité non-espérée. Nous définissons la notion de prime de risque de désaccord, un analogue séquentiel du concept d'audace, afin de prendre en compte le...

L'objectif général de cette étude est, d'une part, d'identifier et d'analyser les facteurs qui contribuent à l'état de la pauvreté infantile et, d'autre part, d'identifier l'existence d'inégalités de bien-être infantile et d'analyser leurs sources dans quatre pays de l'UEMOA: la Côte...