As in any research field, risk theory has its important questions, results, and paradoxes, as well as its seminal … papers and key authors. Louis Eeckhoudt has been a key author in the field of risk theory. To celebrate his many … contributions and continue the development of theories of decision making under risk, the Toulouse School of Economics hosted “Risk …

The economic theory of decision making under risk has seen remarkable advances over the 50 years since Pratt’s (1964 …) characterization of risk aversion under expected utility. We review developments in three key areas to which Louis Eeckhoudt has made … significant contributions: (1) increases in risk and risk taking; (2) self-protection and risk aversion; and (3) higher (and lower …

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 …

coefficient of relative risk aversion (CRRA) that is commensurate with a 100% investment in the risky asset is simulated. The …

pessimism, defined as the composition of the investor's preferences for risk and her preferences for ambiguity. Bulls and bears …

an increase in ambiguity is associated with increased investor activity. It also leads to a reduction in risk …