In this paper, we study the optimal portfolio selection problem of weakly informed traders in the sense of Baudoin \cite{Baudoin_2002}. Instead of considering only expected utility maximizers, we also take into consideration different preference paradigms. In particular, we analyze a...

Why do investors keep different opinions even though they learn from their own failures and successes? Why do investors keep different opinions even though they observe each other and learn from their relative failures and successes? We analyze beliefs dynamics when beliefs result from a very...

In this paper, we show that behavioral features can be obtained at a group level when the individuals of the group are heterogeneous enough. More precisely, starting from a standard model of Pareto optimal allocations, with expected utility maximizers and exponential dis- counting, but allowing...

We test the hypothesis that "genuine" or "convincing" smiling is a costly signal that has evolved to induce cooperation in situations requiring mutual trust. Potential trustees in a trust game made video clips for viewing by potential trusters before the latter decided whether to send them...

This paper empirically analyzes the influence of road proximity on HIV- infection using geographical data on road infrastructure and the Demographic and Health Surveys collected in six African countries. Firstly we show that living in proximity to a major road increases the individual risk of...

To protect intellectual property (IP), organizations use different kinds of mechanisms such as patent, secret or trade secret (Hannah, 2005; 2007). Patent grants to the holder a temporary monopoly position including the right to sue for infringement (Hussinger, 2005). Secret or trade secret is...

Given the low condom use and high prevalence in some African countries, this paper addresses the question of whether these evidences are driven by a supply-side or a demandside issue. The role of road infrastructures on HIV/AIDS outcomes is investigated using data from the Demographic and Health...

Dans la littérature économique, de nombreux travaux tentent d'expliquer pourquoi les individus s’assurent aussi peu contre la dépendance. Du côté de l’offre, différents freins possibles au développement du marché de l’assurance dépendance ont d’ores et déjà été pointés du...