We provide a discipline for belief formation through a model of subjective beliefs, in which agents hold strategic beliefs. More precisely, we consider beliefs as a strategic variable that agents can choose (consciously or not) in order to maximize their utility at the equilibrium. These...

In this paper, we show that behavioral features can be obtained at a group level when the individuals of the group are heterogeneous enough. Starting from a standard model of Pareto optimal allocations, with expected utility maximizers but allowing for heterogeneity among individual beliefs, we...

In this paper we analyse the risk attitude of a group of heterogenous agents and we develop a theory of comparative collective risk tolerance. In particular, we characterize how shifts in the distribution of individual levels of risk tolerance affect the representative agent's degree of risk...

This paper presents an equilibrium model in a pure exchange economy when investors have three possible sources of heterogeneity. Investors may dier in their beliefs, in their level of risk aversion and in their time preference rate. We study the impact of investors heterogeneity on the...

Le modèle d'équilibre général Imaclim-R France est utilisé pour examiner différentes stratégies de transition énergétique menant à une trajectoire 'Facteur 4'. Le bilan macroéconomique d'un jeu d'hypothèses sur les conditions techniques de l'offre et la demande d'énergie varie...

Despite the inextricable link between oil scarcity and climate change, the interplay between these two issues is paradoxically an underworked area. This article uses a global energy-economy model to address the link between future oil supply and climate change and assesses in a common framework...

This paper explores links between global financial imbalances and tensions around reserve currency along with climate change. Currently, risky levels of private and public debts co-exist with vast amounts of savings which "do not know where to go." Long-term climate-oriented financial products...

The actual main objective of international negotiations on climate change aims at elaborating a coordination regime integrating developing countries. The international coordination system built at the Kyoto Conference relies on a coordination system based on quantity based objectives. This...

L'utilisation du calcul économique sur le très long terme fait l'objet de critiques quipeuvent aller jusqu'à un rejet pur et simple, en particulier en raison de la technique del'actualisation qui, en écrasant le poids du long terme, viendrait en contradiction avec leprincipe de précaution....

This paper envisages endogenous technical change as resulting from the interplay between the economic growth engine, consumption, technology and localization patterns. We perform numerical simulations with the recursive dynamic general equilibrium model IMACLIM-R to study how modeling induced...