Victor prefers safety more than Ursula if whenever Ursula prefers some constant to some uncertain act, so does Victor. This paradigm, whose Expected Utility version takes the form of Arrow & Pratt's more risk averse concept, will be studied in the Choquet Uncertainty model, letting u and μ (v...

This paper provides a detailed study of a simple life-cycle consumption model with quasi-hyperbolic discounting and an imperfect financial market. It gives a complete characterization of savings behaviors. The joint assumptions of quasi-hyperbolic discount factors and no-borrowing constraints...

We consider in this paper overlapping generations economies with polution resulting from both consumption and production. The competitive equilibrium steady state is compared to the optimal steady state from the social planner's viewpoint. We show that any competitive equilibrium steady state...

This paper assesses the quantitative impact of ambiguity on the historically observed financial asset returns and prices. The single agent, in a dynamic exchange economy, treats the conditional uncertainty about the consumption and dividends next period as ambiguous. We calibrate the agent's...

Cross-national comparison of policies is basically linked, albeit implicitly, to translation for two main reasons. On the one hand, understanding policies from a comparative point of view is impossible without taking seriously the central role played by language in any political activity. On the...

The determinants of venture capital investment have attracted a significant amount of attention from both academics and policymakers. We use a version of the Keuschnigg-Nielsen model for venture-capital-financed projects to condition our analysis on a reasonable set of exogenous variables but we...

The Relations Between Science and Technology: what Implications for Public Policy? This article proposes an analysis of the science-technology interactions. The first part is historical and focuses on the transformations that resulted from the passage of a prescriptive knowledge (techniques) to...

This paper explores a licensor's choice between charging a per-unit royalty or a …fixed fee when her innovation is covered by a weak patent, i.e. a patent that is likely to be invali- dated by a court if challenged. Using a general model where the nature of competition is not speci…ed, we show...

It has been shown that corruption has a negative effect on firm productivity, but what about its impact on product innovation ? We find that corruption, functioning as a bribe tax, diminishes the probability of new product introduction. We use a World Bank Enterprise Survey from India in 2005,...

Comment réduire les inégalités entre les jeunes et favoriser leur autonomie ? Depuis plusieurs années, les dotations en capital sont mises en avant comme un mode d'action innovant et responsabilisant. Le dispositif emblématique de ce mode d'action est britannique : le Child Trust Fund. A...