This paper studies the Cass-Koopmans-Ramsey model of optimal economic growth with a representative agent whose preferences for consumption can be gradually varied between the standard CES case and Kahneman and Tversky's prospect utility. The numerical analysis of a specific parametrization shows...

We present results from the rst large-scale international surveyon risk preferences, conducted in 45 countries. We show substantialcross-country dierences in risk aversion, loss aversion and probabilityweighting. Moreover, risk attitudes in our sample depend not only oneconomic conditions, but...

We study portfolio diversification in an experimental decision task, where asset returns depend on a draw from an ambiguous urn. Holding other information identical and controlling for the level of ambiguity, we find that labeling assets as being familiar or from the homeland of subjects...