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Solidarity in preference aggregation: Improving on a status quo

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  • Harless, Patrick

Abstract

Working in the Arrowian framework, we search for preference aggregation rules with desirable solidarity properties. In a fixed-population setting, we formulate two versions of the solidarity axiom welfare dominance under preference replacement. Although the stronger proves incompatible with efficiency, the combination of efficiency and our second version leads to an important class of rules which improve upon a “status quo” order. These rules are also strategy-proof, which reveals a further connection between solidarity and incentive properties. Allowing the population to vary, we again characterize the status quo rules by efficiency and a different solidarity axiom, population monotonicity. This extends a similar characterization of a subclass of these rules by Bossert and Sprumont (2014).

Suggested Citation

  • Harless, Patrick, 2016. "Solidarity in preference aggregation: Improving on a status quo," Games and Economic Behavior, Elsevier, vol. 95(C), pages 73-87.
    • Handle: RePEc:eee:gamebe:v:95:y:2016:i:c:p:73-87
    DOI: 10.1016/j.geb.2015.12.009
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    Cited by:

    1. Bettina Klaus & Panos Protopapas, 2020. "Solidarity for public goods under single-peaked preferences: characterizing target set correspondences," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 55(3), pages 405-430, October.
    2. Athanasoglou, Stergios, 2019. "Solidarity and efficiency in preference aggregation: A tale of two rules," Games and Economic Behavior, Elsevier, vol. 118(C), pages 126-140.
    3. Stergios, Athanasoglou, 2017. "An investigation of weak-veto rules in preference aggregation," Working Papers 363, University of Milano-Bicocca, Department of Economics, revised 18 Feb 2017.
    4. Bandhu, Sarvesh & Lahiri, Abhinaba & Pramanik, Anup, 2020. "A characterization of status quo rules in the binary social choice model," Economics Letters, Elsevier, vol. 191(C).
    5. Stergios Athanasoglou & Somouaoga Bonkoungou & Lars Ehlers, 2023. "Strategy-proof preference aggregation and the anonymity-neutrality tradeoff," Working Papers 519, University of Milano-Bicocca, Department of Economics.
    6. Stergios, Athanasoglou, 2017. "Solidarity and efficiency in preference aggregation: a tale of two rules," Working Papers 390, University of Milano-Bicocca, Department of Economics, revised Nov 2018.

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    More about this item

    Keywords

    Welfare dominance under preference replacement; Preference aggregation; Status quo rules;
    All these keywords.

    JEL classification:

    • D63 - Microeconomics - - Welfare Economics - - - Equity, Justice, Inequality, and Other Normative Criteria and Measurement
    • D71 - Microeconomics - - Analysis of Collective Decision-Making - - - Social Choice; Clubs; Committees; Associations

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