Cet article étudie l'évolution et les effets incitatifs des stock-options attribuées aux dirigeants de dix-huit entreprises du CAC40 entre 1994 et 2003. Une base de données portant sur 184 plans d'attribution de stock-options par ces entreprises est utilisée afin de suivre l'évolution et...

An article about Kihlstrom and Mirman about comparative risk aversion with many goods is critiqued. If "more risk averse" is interpreted as signifying that an individual is less willing to accept a median-preserving spread, then risk aversion cannot be compared across individuals with different...

This chapter of a collective book aims at presenting the basics of decision making under risk. We first define notions of risk and increasing risk and recall definitions and classifications (that are valid independently of any representation) of behavior under risk. We then review the classical...

The classical expected utility model of decision under risk (von Neumann-Morgenstern, 1944) has been criticized from an experimental point of view (Allais' paradox) as well as for its restrictive lack of explanatory power. The Rank-Dependent Expected Utility model (RDU) model (Quiggin, 1982)...

We report in this paper the result of three experiments on risk, ambiguity and time attitude. The first two differed by the population considered (students vs general population) while the third one used a different protocol and concerned students and portfolio managers. We find quite a lot of...

We explore empirically whether earnings uncertainty and borrowing constraints deter households from the stockmarket, consistent with the predictions of theoretical studies of portfolio choice in the presence of uninsurable earnings. Recent extensions highlight the importance of the correlation...

For a sub-sample of French households of an Insee wealth survey, we obtain new and relative measures of 5 individual preference parameters : the risk "attitude" (aversion, prudence...), the rate of time depreciation over the life-cycle, the degree of short-term impatience, and the degrees of...

In an extended variant of the life-cycle hypothesis, saving behaviour is shown to depend crucially on the interaction between two preference parameters : γ, which represents risk attitudes (aversion, prudence...), and δ, the rate of time depreciation. Hence, the predictions of four specific...