reduction (self-protection) so that correlation becomes endogenous. If prevention concerns only one risk, introducing a second … exogenous risk increases the level of prevention expenditures, even if correlation is negative. If prevention expenditures may … increased dependence increases aggregate prevention expenditures, but not necessarily prevention expenditures for each risk due …

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) …

Typical value-at-risk (VAR) calculations involve the probabilities of extreme dollar losses, based on the statistical … VAR values that are adjusted for risk aversion, time preferences, and other variations in economic valuation. In the … context of a representative agent equilibrium model, we construct an estimator of the risk-aversion coefficient that is …