On the Interaction of Risk and Time Preferences: An Experimental Study

Anderhub Vital and Güth Werner
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Anderhub Vital: Institute for Economic Theory,Berlin, Germany
Güth Werner: Institute for Economic Theory,Berlin, Germany

German Economic Review, 2001, vol. 2, issue 3, 239-253

Abstract: Experimental studies of risk and time preference typically focus on one of the two phenomena. The goal of this paper is to investigate the (possible) correlation between subjects' attitude to risk and their time preference. For this sake we ask 61 subjects to price a simple lottery in three different scenarios. At the first, the lottery premium is paid `now'. At the second, it is paid `later'. At the third, it is paid `even later'. By comparing the certainty equivalents offered by the subjects for the three lotteries, we test how time and risk preferences are interrelated. Since the time interval between `now' and `later' is the same as between `later' and `even later', we also test the hypothesis of hyperbolic discounting. The main result is a statistically significant negative correlation between subjects' degrees of risk aversion and their (implicit) discount factors. Moreover, we show that the negative correlation is independent of the method used to elicit certainty equivalents (willingness to pay versus willingness to accept).

Date: 2001
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DOI: 10.1111/1468-0475.00036

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