Weber's Law and the Biological Evolution of Risk Preferences: The Selective Dominance of the Logarithmic Utility Function
AbstractThe paper offers a proof that expected utility maximisation with logarithmic utility is a dominant preference in the biological selection process in the sense that a population following any other preference for decision-making under risk will, with a probability that approaches certainty, disappear relative to the population following this preference as time goes to infinity. The result is contrasted with Weber's and Fechner's Psychophysical Law which implies logarithmic sensation functions for objective physical stimuli.
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Bibliographic InfoPaper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 770.
Date of creation: 2002
Date of revision:
evolution; selection; risk preferences;
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- Sinn, Hans-Werner, 1980. "Ökonomische Entscheidungen bei Ungewißheit," Monograph, Mohr Siebeck, Tübingen, edition 1, number urn:isbn:9783169427024, February.
- Robson, Arthur J., 1996. "A Biological Basis for Expected and Non-expected Utility," Journal of Economic Theory, Elsevier, vol. 68(2), pages 397-424, February.
- Karni, Edi & Schmeidler, David, 1986. "Self-preservation as a foundation of rational behavior under risk," Journal of Economic Behavior & Organization, Elsevier, vol. 7(1), pages 71-81, March.
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