English, Article edition: Multivariate Risk Aversion and Intertemporal Substitution Edward E. Schlee

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  • article
Language
  • English

Edition details

Title
  • Multivariate Risk Aversion and Intertemporal Substitution
Author
  • Edward E. Schlee
Physical Description
  • article
Notes
  • Researchers often assume that preferences over uncertain consumption streams are representable bywhere , is (random) period t consumption. It is moreover often asserted that estimates of γ cannot be unambiguously interpreted, since the quantity 1 - γ measures both relative risk aversion and the reciprocal of the elasticity of substitution. Clearly, this ambiguity arises only if 1 - γ indeed measures risk aversion. Although changes in γ cannot reflect changes in risk aversion according to standard definitions of comparative multivariate risk aversion, we show that γ is rationalizable as a risk aversion measure provided that the “acceptance set” of sure prospects is restricted. We also show, however, that there is essentially no relationship between changes in γ and optimal consumption, even in a simple two period model; this finding casts doubt upon the interpretation of γ as a risk aversion measure. The Geneva Papers on Risk and Insurance Theory (1992) 17, 159–169. doi:10.1007/​BF00962712
  • RePEc:pal:genrir:v:17:y:1992:i:2:p:159-169
Language
  • English
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