Inconsistent Choices in Lottery Experiments: Evidence from Rwanda
AbstractLottery experiments have been performed in many contexts to test theories of risk aversion and to measure risk preferences. People are typically offered a series of lotteries with increasing expected payoffs and variances. A person with a concave utility function should switch from risky bets to safer bets at some point and never switch back. Switching back implies preferences inconsistent with a concave utility function. Our experiment, conducted with a population of adults in Rwanda, presents respondents with a series of binary-choice lotteries over gains and losses. We observe that 54-55% of subjects made at least one inconsistent choice over gains or losses, and 7-13% made at least two inconsistent choices. This holds for both hypothetical and real lottery payoffs. Inconsistent choices were less common when stakes were higher, and women are more likely to be inconsistent. While risk aversion alone is not correlated with actual economic outcomes, such as membership in savings (tontines) and insurance groups and holding a larger number of bank accounts, inconsistency is.
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Bibliographic InfoPaper provided by Experimental Economics Center, Andrew Young School of Policy Studies, Georgia State University in its series Experimental Economics Center Working Paper Series with number 2007-03.
Date of creation: Apr 2007
Date of revision:
This paper has been announced in the following NEP Reports:
- NEP-ALL-2007-06-23 (All new papers)
- NEP-CBE-2007-06-23 (Cognitive & Behavioural Economics)
- NEP-EXP-2007-06-23 (Experimental Economics)
- NEP-MFD-2007-06-23 (Microfinance)
- NEP-UPT-2007-06-23 (Utility Models & Prospect Theory)
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