Comparative Ambiguity Aversion for Smooth Utility Functions

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• Chiaki Hara (Kyoto University)
• Thursday 15 October 2020, 13:00-14:00
• Online.

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Abstract] When a twice differentiable utility function represents an ambiguity-averse preference relation over the set of acts on monetary consequences, we define a measure of ambiguity aversion. The measure is determined by the Hessian of the utility function and the subjective probability derived from it, and allows us to compare two decision makers’ measure of ambiguity aversion even when they have different risk attitudes and utility functions of forms that have been characterized by different axioms in the literature. Implications on the numerical analysis on portfolio

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