The persistence of common-ratio effects in multiple-play decisions
Journal Title: Judgment and Decision Making - Year 2016, Vol 11, Issue 4
Abstract
People often make more rational choices between monetary prospects when their choices will be played out many times rather than just once. For example, previous research has shown that the certainty effect and the possibility effect (two common-ratio effects that violate expected utility theory) are eliminated in multiple-play decisions. This finding is challenged by seven new studies (N = 2391) and two small meta-analyses. Results indicate that, on average, certainty and possibility effects are reduced but not eliminated in multiple-play decisions. Moreover, in our within-participants studies, the certainty and possibility choice patterns almost always remained the modal or majority patterns. Our primary results were not reliably affected by prompts that encouraged a long-run perspective, by participants’ insight into long-run payoffs, or by participants’ numeracy. The persistence of common-ratio effects suggests that the oft-cited benefits of multiple plays for the rationality of decision makers’ choices may be smaller than previously realized.
Authors and Affiliations
Michael L. DeKay, Dan R. Schley, Seth A. Miller, Breann M. Erford, Jonghun Sun, Michael N. Karim and Mandy B. Lanyon
Keywords
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