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A Note on a Weighted Voting Experiment: Human Mistakes in Cooperative Games

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  • Eric Guerci

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique, GREDEG - Groupe de Recherche en Droit, Economie et Gestion - UNS - Université Nice Sophia Antipolis (1965 - 2019) - CNRS - Centre National de la Recherche Scientifique - UniCA - Université Côte d'Azur)

  • Nobuyuki Hanaki

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique, Economics Department - Université de Tsukuba = University of Tsukuba)

  • Naoki Watanabe

    (Economics Department - Université de Tsukuba = University of Tsukuba)

  • Gabriele Esposito

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

  • Xiaoyan Lu

    (GREQAM - Groupement de Recherche en Économie Quantitative d'Aix-Marseille - EHESS - École des hautes études en sciences sociales - AMU - Aix Marseille Université - ECM - École Centrale de Marseille - CNRS - Centre National de la Recherche Scientifique)

Abstract

We conducted a sensitivity analysis of results in weighted voting experiments by varying the following two features of the protocol by Montero et al. (2008): (a) the way subjects' roles are reassigned in each round (random versus semi-fixed roles) and (b) the number of proposals that subjects can approve simultaneously (multiple versus single approval). We found that the possibility of simultaneously approving many proposals (multiple approvals) may result in more confusion and mistakes by subjects than the case without such a possibility (single approval). We also found that frequencies of minimal winning coalitions (MWCs) observed under the protocol with semi-fixed roles and single approval are consistent with our hypothesis: each subject prefers a MWC in which his or her relative weight is larger, and the probability of each MWC occurring depends on a score in the social ordering determined by the Borda count, when there is no veto player.

Suggested Citation

  • Eric Guerci & Nobuyuki Hanaki & Naoki Watanabe & Gabriele Esposito & Xiaoyan Lu, 2011. "A Note on a Weighted Voting Experiment: Human Mistakes in Cooperative Games," Working Papers halshs-00645867, HAL.
    • Handle: RePEc:hal:wpaper:halshs-00645867
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-00645867
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    References listed on IDEAS

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    1. John Kagel & Hankyoung Sung & Eyal Winter, 2010. "Veto power in committees: an experimental study," Experimental Economics, Springer;Economic Science Association, vol. 13(2), pages 167-188, June.
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    7. Michalis Drouvelis & Maria Montero & Martin Sefton, 2007. "The Paradox of New Members: Strategic Foundations and Experimental Evidence," Discussion Papers 2007-13, The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham.
    8. Dan S. Felsenthal & Moshé Machover, 1998. "The Measurement of Voting Power," Books, Edward Elgar Publishing, number 1489.
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    Cited by:

    1. Matthias Weber, 2014. "Choosing Voting Systems behind the Veil of Ignorance: A Two-Tier Voting Experiment," Tinbergen Institute Discussion Papers 14-042/I, Tinbergen Institute.

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    Keywords

    weighted voting; experiment; cooperative game; mistakes; winning coalition;
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