A well-known theorem of Blackwell states that, when quantity of information is properly defined, every expected utility decisionmaker prefers more information to less; for more general preferences, however, the theorem is no longer true. In this article, we investigate the extent to which...

A key feature of the rank dependent model for decision making under risk is that the weighting of an outcome depends on its relative rank. This theory received numerous axiomatizations, however, all these sets of axioms need to make an explicit reference to the ranking of the outcomes. This...

We present an axiomatic model depicting the choice behavior of a self-interest seeking moral individual over random allocation procedures. Individual preferences are decomposed into a self-interest component and a component representing the individual's moral value judgment. Each component has a...

This paper questions the interpretation of the Nash bargaining solution. A new definition is suggested. Revisions of Nash axioms characterize the solution. The definition makes possible its extension to non-expected-utility preferences. It also reveals the logic behind the comparative statics of...

Rabin proved that a low level of risk aversion with respect to small gambles leads to a high, and absurd, level of risk aversion with respect to large gambles. Rabin's arguments strongly depend on expected utility theory, but we show that similar arguments apply to almost all non-expected...

Within the framework of expected utility theory with rank-dependent probabilities, the authors present a hypothesis concerning the shape of the probability transformation function. This hypothesis is consistent with the "preference reversals" phenomenon. In particular, it is consistent with the...