A Generalization of Pratt-Arrow Measure to Nonexpected-Utility Preferences and Inseparable Probability and Utility

The Pratt-Arrow measure of local risk aversion is generalized for the n -dimensional state-preference model of choice under uncertainty in which the decision maker may have inseparable subjective probabilities and utilities, unobservable stochastic prior wealth, and/or smooth nonexpected-utility pre...

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Veröffentlicht in:Management science 2003-08, Vol.49 (8), p.1089-1104
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description The Pratt-Arrow measure of local risk aversion is generalized for the n -dimensional state-preference model of choice under uncertainty in which the decision maker may have inseparable subjective probabilities and utilities, unobservable stochastic prior wealth, and/or smooth nonexpected-utility preferences. Local risk aversion is measured by the matrix of derivatives of the decision maker's risk-neutral probabilities, without reference to true subjective probabilities or riskless wealth positions, and comparative risk aversion is measured without requiring agreement on true probabilities. Risk-neutral probabilities and their derivatives are shown to be sufficient statistics for approximately optimal investment and financing decisions in complete markets for contingent claims.
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Risk-neutral probabilities and their derivatives are shown to be sufficient statistics for approximately optimal investment and financing decisions in complete markets for contingent claims.</description><subject>Business studies</subject><subject>Criteria for Decision Making Under Risk and Uncertainty</subject><subject>Decision making</subject><subject>Economic analysis</subject><subject>Economic theory</subject><subject>Economic uncertainty</subject><subject>Economic utility</subject><subject>Expected utility</subject><subject>Expected values</subject><subject>Expected-Utility Theory</subject><subject>Financial risk</subject><subject>Indifference curves</subject><subject>Management</subject><subject>Market prices</subject><subject>Mathematical models</subject><subject>Methods</subject><subject>Nonexpected-Utility</subject><subject>Preferences</subject><subject>Probability</subject><subject>Risk</subject><subject>Risk Aversion</subject><subject>Risk aversion 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subjects Business studies
Criteria for Decision Making Under Risk and Uncertainty
Decision making
Economic analysis
Economic theory
Economic uncertainty
Economic utility
Expected utility
Expected values
Expected-Utility Theory
Financial risk
Indifference curves
Management
Market prices
Mathematical models
Methods
Nonexpected-Utility
Preferences
Probability
Risk
Risk Aversion
Risk aversion preference
Risk premiums
Risk-taking (Psychology)
Smooth Preferences
Studies
Uncertainty
Uncertainty Aversion
Utility functions
Utility theory
Wealth
Wealth distribution
title A Generalization of Pratt-Arrow Measure to Nonexpected-Utility Preferences and Inseparable Probability and Utility
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