文章基本信息

标题：The Effect of Prices on Risk Aversion
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作者：Richard Watt ; Francisco J. Vázquez
期刊名称：Theoretical Economics Letters
印刷版ISSN：2162-2078
电子版ISSN：2162-2086
出版年度：2012
卷号：2
期号：1
页码：40-44
DOI：10.4236/tel.2012.21007
出版社：Scientific Research Publishing
摘要：Traditionally, risk aversion (both absolute and relative) has been expressed as a function of wealth alone. The charac- teristics of risk aversion as wealth changes have been extensively studied. However, prices, as well as wealth, enter the indirect utility function, from which the typical risk aversion measures are calculated. Given that, changes in prices will affect risk aversion, although exactly how has not been considered in the literature. This paper provides such an analysis. In particular, we firstly remind the reader that both absolute and relative risk aversion are homogeneous functions, and as such independently of their particular slopes in wealth, there is a natural effect that holds relative risk aversion constant and decreases absolute risk aversion when prices and wealth are increased by a common factor. We also show that the size of relative risk aversion as compared to the number 1, which is of much importance to the comparative statics of the economics of risk and uncertainty, depends on how changes in prices affect marginal utility. Under plausible (and standard) theoretical assumptions we find that relative risk aversion is likely to be increasing, and that increases in prices will have a tempering effect on risk aversion.
关键词：Risk Aversion; Prices; Indirect Utility