We study S-shaped utility maximization for the standard portfolio selection problem with one risky and one risk-free asset. We derive a mean-variance criterium of choice, which preserves reference dependence and the reflection effect. Subsequently, we study diversification possibilities and...

This paper studies a target-based procedure to rank lotteries that is normatively and observationally equivalent to the expected utility model. In view of this equivalence, the traditional utility-based language for decision making may be substituted with an alternative target-based language....

This paper describes a parametric family of utility functions for decision analysis. The parameterization is obtained by embedding the HARA class in a four-parameter representation for the risk aversion function. The resulting utility functions have only four shapes: concave, convex, S-shaped,...