Testing constant absolute and relative ambiguity aversion
نویسندگان
چکیده
منابع مشابه
Hypothesis Testing and Ambiguity Aversion∗
We study a model of non-Bayesian updating, based on the Hypothesis Testing model of Ortoleva (2012), for ambiguity averse agents. Agents ranks acts following the MaxMin Expected Utility model of Gilboa and Schmeidler (1989) and when they receive new information they update their set of priors as follows: If the information is such that all priors in the original set of priors assign to it a pro...
متن کاملAmbiguity and Ambiguity Aversion
Consider the following choice problem, known as “Ellsberg’s three-color urn example”, or simply the “Ellsberg Paradox” (Ellsberg [7]). An urn contains 30 red balls, and 60 green and blue balls, in unspecified proportions; subjects are asked to compare (i) a bet on a red draw vs. a bet on a green draw, and (ii) a bet on a red or blue draw vs. a bet on a green or blue draw. If the subject wins a ...
متن کاملMean-dispersion preferences and constant absolute uncertainty aversion
We axiomatize, in an Anscombe-Aumann framework, the class of preferences that admit a representation of the form V (f) = (d), where is the mean utility of the act f with respect to a given probability, d is the vector of state-by-state utility deviations from the mean, and (d) is a measure of (aversion to) dispersion that corresponds to an uncertainty premium. The key feature of these mean-disp...
متن کاملRentseeking by Players with Constant Absolute Risk Aversion
We introduce a novel method of modelling Tullock rent-seeking contests that avoids the complexities encountered by the ‘best response function’ approach. We analyse contests in which there are many risk averse players differing in their attitudes to risk. We establish that, if every player has a constant degree of absolute risk aversion, a unique equilibrium exists. We also establish comparativ...
متن کاملAllais at the Horse Race: Testing Models of Ambiguity Aversion
Most models of ambiguity aversion satisfy Anscombe-Aumann’s Monotonicity axiom. This paper proposes a test of Monotonicity, the Allais Horse Race. It is an adaptation of the Allais paradox to a setting with both subjective and objective uncertainty. Viewed as a thought experiment, the Allais Horse Race allows for introspective assessment of Monotonicity. Implementing it as an incentivized exper...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Economic Theory
سال: 2019
ISSN: 0022-0531
DOI: 10.1016/j.jet.2019.02.006