This paper analyzes optimal prevention in a situation of multiple, possibly correlated risks. We focus on probability reduction (self-protection) so that correlation becomes endogenous. If prevention concerns only one risk, introducing a second exogenous risk increases the level of prevention...

Measuring risk aversion is sensitive to assumptions about the wealth in subjects' utility functions. Data from the same subjects in low- and high-stake lottery decisions allow estimating the wealth in a pre-specified one-parameter utility function simultaneously with risk aversion. This paper...

As illustrated by the famous Ellsberg paradox, many subjects prefer to bet on events with known rather than with unknown probabilities, i.e., they are ambiguity averse. In an experiment, we examine subjects’ choices when there is an additional source of ambiguity, namely, when they do not know...

In this paper, I consider a consumer with a concave utility function over n commodities and trace out the consequences of quantity constraints on product markets for the consumer's aversion towards income risk. I show that the effect can be decomposed in a cardinal and ordinal term, that both...

This paper specifies a model of hierarchical planning under risk with imprecise probabilities and utilities. The model is then used to explain how agents might act in ways that are both risk averse and risk avid (i.e. risk seeking)

I study attitudes towards risk taking in cases where a person relates to others positively, namely altruistically. This study is needed because it is unclear how altruism influences the inclination of an altruistic person to take risks. Will this person's risk-taking behavior differ if the...