Consumer's Welfare and Change in Stochastic Partial-Equilibrium Price
First, I show that the expected consumer's surplus is equivalent to ex ante compensating variation if and only if the consumer is risk neutral, and the consumer's income elasticity of demand for the commodity is zero. Moreover, the conditions are equivalent to the von Neuman - Morgenstern utility function being quasi-linear. Second, I show that the expected consumer's surplus is an approximation for the consumer's welfare, measured by expected utility, also if the expenditure share is small. Third, I propose a formula to evaluate approximately the consumer's welfare, measured both by expected utility and by ex ante compensating variation, when the above conditions are not met.
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|Date of creation:||1995|
|Contact details of provider:|| Postal: UNIVERSITY OF STOCKHOLM, INSTITUTE FOR INTERNATIONAL ECONOMIC STUDIES, S- 106 91 STOCKHOLM SWEDEN.|
Web page: http://www.iies.su.se/
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- Mehra, Rajnish & Prescott, Edward C., 1985. "The equity premium: A puzzle," Journal of Monetary Economics, Elsevier, vol. 15(2), pages 145-161, March.
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- Helms, L. Jay, 1984. "Comparing stochastic price regimes : The limitations of expected surplus measures," Economics Letters, Elsevier, vol. 14(2-3), pages 173-178.
- Carl Shapiro, 1986. "Exchange of Cost Information in Oligopoly," Review of Economic Studies, Oxford University Press, vol. 53(3), pages 433-446.
- Riordan, Michael H & Sappington, David E M, 1987. "Awarding Monopoly Franchises," American Economic Review, American Economic Association, vol. 77(3), pages 375-387, June.
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