Choice Shifts in Groups
The phenomenon of "choice shifts" in group decision-making is fairly ubiquitous in the social psychology literature. Faced with a choice between a ``safe" and ``risky" decision, group members appear to move to one extreme or the other, relative to the choices each member might have made on her own. Both risky and cautious shifts have been identified in different situations. This paper demonstrates that from an individual decision-making perspective, choice shifts may be viewed as a systematic violation of expected utility theory. We propose a model in which a well-known failure of expected utility - captured by the Allais paradox - is equivalent to a particular configuration of choice shifts. Thus, our results imply a connection between two well-known behavioral regularities, one in individual decision theory and another in the social psychology of groups
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- Battaglini, Marco & Benabou, Roland & Tirole, Jean, 2005.
"Self-control in peer groups,"
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- Chris Starmer, 2000. "Developments in Non-expected Utility Theory: The Hunt for a Descriptive Theory of Choice under Risk," Journal of Economic Literature, American Economic Association, vol. 38(2), pages 332-382, June.
- Grant, Simon & Kajii, Atsushi & Polak, Ben, 2001. "Different notions of disappointment aversion," Economics Letters, Elsevier, vol. 70(2), pages 203-208, February. Full references (including those not matched with items on IDEAS)
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