Key points are not available for this paper at this time.
Robert H. Litzenberger, Cherukuri U. Rao, Estimates of the Marginal Rate of Time Preference and Average Risk Aversion of Investors in Electric Utility Shares: 1960-66, The Bell Journal of Economics and Management Science, Vol. 2, No. 1 (Spring, 1971), pp. 265-277
Litzenberger et al. (Fri,) studied this question.