Group Versus Individual Decision-Making: Is there a shift?

Attila Ambrus (), Ben Greiner and Parag Pathak
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Attila Ambrus: Department of Economics, Harvard University

No 91, Economics Working Papers from Institute for Advanced Study, School of Social Science

Abstract: We revisit the phenomenon that group decisions differ systematically from decisions of individuals. Our experiment solicits individual and group decisions from the same subjects in two settings, gift-exchange games and lottery choices. With no deliberation and voting, the group decision is determined by the median individual decision, without a shift. With deliberation but no imposed decision rule, the individual one po- sition towards the selfish direction also becomes influential. In lottery choices we find no group shift relative to the median. We demonstrate that the standard practice of comparing means of group and individual decisions would incorrectly identify a level shift.

Keywords: Decision making; lottery; risky choices (search for similar items in EconPapers)
Pages: 37 pages
Date: 2009-05
New Economics Papers: this item is included in nep-cbe, nep-cdm, nep-exp, nep-gth, nep-pol and nep-upt
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Citations: View citations in EconPapers (14)

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