We present an intertemporal model of consumption and savings incorporating liquidity constraints and non-separable preferences. We solve the problem numerically and characterize the optimal consumption behavior. We explore the traditional puzzles highlighted in the empirical literature as excess...

Sous l’hypothèse de prévisions parfaites et en horizon infini, nous proposons un modèle des choix de consommation d’un agent représentatif dont le revenu, à chaque période, se compose de son salaire et du rendement du stock d’actifs qu’il détient. Une partie de sa consommation est...

I construct a successive generations model of appropriative competition between ethnicities where de facto power puts an upper-bound on the consumption of each clan. My aim is to derive the implications of the structure of the ethnic and political divisions in terms of economic prosperity. I...

Cet article étudie les effets sur l'épargne d'une incertitude sur le taux de croissance de la population dans un modèle à générations imbriquées. Nous montrons que les hypothèses nécessaires à la formation d'une épargne individuelle de précaution ne suffisent pas dans un cadre...

In this paper, we study the role of habit formation in accounting for the joint behavior of the real interest rate and consumption growth following a contractionary monetary policy shock, the real interest rate exhibits a persistent increase while consumption growth drops persitently. As the...

Introduced by Samuelson (1975), the Serendipity Theorem states that the competitive economy will converge towards the optimum steady-state provided the optimum population growth rate is imposed. This paper aims at exploring whether the Serendipity Theorem still holds in an economy with risky...

This note derives the Golden Rule of capital accumulation in a Chakraborty-type economy, i.e. a two-period OLG economy where longevity is endogenous. It is shown that the capital per worker maximizing steady-state consumption per head is inferior to the Golden Rule capital level prevailing under...

We use a two-good dynamic optimizing small open economy model to provide a new explanation of the J-Curve phenomenon in terms of habit persistence in consumption and sluggishness in capital adjustment. The results differ markedly depending on the permanence or temporary nature of the relative...

This contribution shows that the persistence and the time of occurence of the shock matter in determining the long-run macroeconomic aggregates’ responses after permanent and transitory terms of trade shocks. Within a simple two-good small open economy model, we differentiate analyticaly...

In a two- region model, we formalize Kindleberger’s idea that wealth breeds first more wealth, and then decline : when one region leads, its inhabitants develop consumption habits incompatible with the necessary investment in knowledge to remain the leader. This gives the other region a window...