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15 novembre 2022
- handle: 10670/1.ctk85c
- hal: hal-03031751
- doi: 10.1093/jeea/jvad008
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info:eu-repo/semantics/altIdentifier/doi/10.1093/jeea/jvad008
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Mots-clés
Ambiguity aversion model uncertainty model misspecification non-expected utility reduction of compound lotteries D - Microeconomics/D.D8 - Information, Knowledge, and Uncertainty/D.D8.D81 - Criteria for Decision-Making under Risk and UncertaintyCiter ce document
Ilke Aydogan et al., « Three layers of uncertainty », HAL-SHS : économie et finance, ID : 10.1093/jeea/jvad008
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Résumé
We explore decision-making under uncertainty using a framework that decom- poses uncertainty into three distinct layers: (1) risk, which entails inherent random- ness within a given probability model; (2) model ambiguity, which entails uncertainty about the probability model to be used; and (3) model misspecification, which en- tails uncertainty about the presence of the correct probability model among the set of models considered. Using a new experimental design, we isolate and measure attitudes towards each layer separately. We conduct our experiment on three different subject pools and document the existence of a behavioral distinction between the three layers. In addition to providing new insights into the underlying processes behind ambiguity aversion, we provide the first empirical evidence of the role of model misspecification in decision-making under uncertainty.