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Group decisions under ambiguity: Convergence to neutrality

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  • Keck, Steffen
  • Diecidue, Enrico
  • Budescu, David V.

Abstract

This paper focuses on decisions under ambiguity. Participants in a laboratory experiment made decisions in three different settings: (a) individually, (b) individually after discussing the decisions with two others, and (c) in groups of three. We show that groups are more likely to make ambiguity-neutral decisions than individuals, and that individuals make more ambiguity-neutral decisions after discussing the decisions with others. This shift toward higher ambiguity neutrality in groups and after a group discussion is associated with a reduction in the rates of both ambiguity aversion and ambiguity seeking. We suggest that the results might be driven by effective and persuasive communication that takes place in groups.

Suggested Citation

  • Keck, Steffen & Diecidue, Enrico & Budescu, David V., 2014. "Group decisions under ambiguity: Convergence to neutrality," Journal of Economic Behavior & Organization, Elsevier, vol. 103(C), pages 60-71.
  • Handle: RePEc:eee:jeborg:v:103:y:2014:i:c:p:60-71 DOI: 10.1016/j.jebo.2014.03.026
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    Cited by:

    1. Stephan Jagau & Theo (T.J.S.) Offerman, 2017. "Defaults, Normative Anchors and the Occurrence of Risky and Cautious Shifts," Tinbergen Institute Discussion Papers 17-083/I, Tinbergen Institute.
    2. M. Vittoria Levati & Stefan Napel & Ivan Soraperra, 2017. "Collective Choices Under Ambiguity," Group Decision and Negotiation, Springer, vol. 26(1), pages 133-149, January.
    3. Sasha Prokosheva, 2014. "Comparing Decisions under Compound Risk and Ambiguity: The Importance of Cognitive Skills," CERGE-EI Working Papers wp525, The Center for Economic Research and Graduate Education - Economics Institute, Prague.
    4. Bougheas, Spiros & Nieboer, Jeroen & Sefton, Martin, 2013. "Risk-taking in social settings: Group and peer effects," Journal of Economic Behavior & Organization, Elsevier, vol. 92(C), pages 273-283.
    5. Stöckl, Thomas & Huber, Jürgen & Kirchler, Michael & Lindner, Florian, 2015. "Hot hand and gambler's fallacy in teams: Evidence from investment experiments," Journal of Economic Behavior & Organization, Elsevier, vol. 117(C), pages 327-339.
    6. Dudley Cooke & Sara le Roux, 2016. "Strategic Ambiguity and Decision-making: An Experimental Study," Discussion Papers 1605, Exeter University, Department of Economics.
    7. Andreas Friedl & Patrick Ring & Ulrich Schmidt, 2017. "Gender differences in ambiguity aversion under different outcome correlation structures," Theory and Decision, Springer, vol. 82(2), pages 211-219, February.
    8. Konstantinos Georgalos & Enrica Carbone & Gerardo Infante, 2016. "Individual vs. Group Decision Making: an Experiment on Dynamic Choice under Risk and Ambiguity," Working Papers 138739716, Lancaster University Management School, Economics Department.
    9. Aurélien Baillon & Han Bleichrodt & Ning Liu & Peter P. Wakker, 2016. "Group decision rules and group rationality under risk," Journal of Risk and Uncertainty, Springer, vol. 52(2), pages 99-116, April.

    More about this item

    Keywords

    Ambiguity; Group decision making; Imprecision; Risk; Vagueness;

    JEL classification:

    • C92 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Group Behavior
    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations
    • D81 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Criteria for Decision-Making under Risk and Uncertainty

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