We study the asset allocation of an investor with prospect theory (PT) preferences. First, we solveanalytically the two-asset problem of the PT investor for one risk-free and one risky asset and find thatloss aversion and the reference return affect differently less ambitious and more ambitious...

We study the representative consumer's risk attitude and efficient risk-sharing rules in a single-period, single-good economy in which consumers have homogeneous probabilistic beliefs but heterogeneous risk attitudes. We prove that if all consumers have convex absolute risk tolerance, so must...

I study the implications of Abraham Wald's (1947) complete class theorem for decision making under Knightian uncertainty (or ambiguity). Suppose we call someone who uses Wald's approach to statistical decision making a Waldian. A Waldian may then have preferences over acts that are not in...