Uncertain or ambiguous events cannot be objectively measured by probabilities, i.e. different decision makers may disagree about their likelihood of occurrence. This paper proposes a new decision-theoretical approach how to measure ambiguity (Knightian uncertainty) that is independent of...

We select a menu of seven popular decision theories and embed each theory in five models of stochastic choice including tremble, Fechner and random utility model. We find that the estimated parameters of decision theories differ significantly when theories are combined with different models....

In the television show Deal or No Deal a contestant is endowed with a sealed box, which potentially contains a large monetary prize. In the course of the show the contestant learns more information about the distribution of possible monetary prizes inside her box. Consider two groups of...

Intertemporal choice is intuitively analogous to choice under risk/uncertainty when outcomes are viewed as consequences received in an uncertain future. "Discounted incremental utility" (DIU) model of intertemporal choice parallels expected utility representation of risk preferences. DIU...

Risk preferences of Australian academia are elicited by analyzing the aggregate distribution of their retirement funds (superannuation) across available investment options. Not more than 10% of retirement funds are invested as if their owners maximize expected utility under the assumption of...

Unlike the Nash equilibrium, logit quantal response equilibrium is affected by positive affine transformations of players' von Neumann-Morgenstern utility payoffs. This paper presents a modification of a logit quantal response equilibrium that makes this equilibrium solution concept invariant to...

The Allais Paradox, or Common Consequence Effect to be precise, is one of the most well-known behavioral regularities in individual decision making under risk. A common perception in the literature, which motivated the development of numerous generalized non‐expected utility theories, is that...

The transitivity axiom is common to nearly all descriptive and normative utility theories of choice under risk. Recent experiments claim to show observed intransitive preference cycles are no more than noise. We take issue with this consensus position and its normative defence of transitivity....

This paper presents a new decision theory for modelling choice under risk. The new theory is a two-parameter generalization of expected utility theory. The proposed theory assumes that a decision maker: 1) behaves as if maximizing expected utility; but 2) may experience disappointment (elation)...

Geometric utility theory is proposed for modeling decision making under risk and uncertainty. If a decision maker's preferences satisfy four standard behavioral assumptions (completeness, transitivity, continuity and the independence axiom) then they admit a geometric utility representation....