The von Neumann/Morgenstern approach to ambiguity

Dumav M, Stinchcombe MB (2013) Center for Mathematical Economics Working Papers; 480.
Bielefeld: Center for Mathematical Economics.

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Abstract / Bemerkung
A choice problem is risky (respectively ambiguous) if the decision maker is choosing between probability distributions (respectively sets of probability distributions) over utility relevant consequences. We provide an axiomatic foundation for and a representation of continuous linear preferences over sets of probabilities on consequences. The representation theory delivers: first and second order dominance for ambiguous problems; a utility interval based dominance relation that distinguishes between sources of uncertainty; a complete theory of updating convex sets of priors; a Bayesian theory of the value of ambiguous information structures; complete separations of attitudes toward risk and ambiguity; and new classes of preferences that allow decreasing relative ambiguity aversion and thereby rationalize recent challenges to many of the extant multiple prior models of ambiguity aversion. We also characterize a property of sets of priors, descriptive completeness, that resolves several open problems and allows multiple prior models to model as large a class of problems as the continuous linear preferences presented here.
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480
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38
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Dumav M, Stinchcombe MB. The von Neumann/Morgenstern approach to ambiguity. Center for Mathematical Economics Working Papers. Vol 480. Bielefeld: Center for Mathematical Economics; 2013.
Dumav, M., & Stinchcombe, M. B. (2013). The von Neumann/Morgenstern approach to ambiguity (Center for Mathematical Economics Working Papers, 480). Bielefeld: Center for Mathematical Economics.
Dumav, M., and Stinchcombe, M. B. (2013). The von Neumann/Morgenstern approach to ambiguity. Center for Mathematical Economics Working Papers, 480, Bielefeld: Center for Mathematical Economics.
Dumav, M., & Stinchcombe, M.B., 2013. The von Neumann/Morgenstern approach to ambiguity, Center for Mathematical Economics Working Papers, no.480, Bielefeld: Center for Mathematical Economics.
M. Dumav and M.B. Stinchcombe, The von Neumann/Morgenstern approach to ambiguity, Center for Mathematical Economics Working Papers, vol. 480, Bielefeld: Center for Mathematical Economics, 2013.
Dumav, M., Stinchcombe, M.B.: The von Neumann/Morgenstern approach to ambiguity. Center for Mathematical Economics Working Papers, 480. Center for Mathematical Economics, Bielefeld (2013).
Dumav, Martin, and Stinchcombe, Maxwell B. The von Neumann/Morgenstern approach to ambiguity. Bielefeld: Center for Mathematical Economics, 2013. Center for Mathematical Economics Working Papers. 480.
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