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Strategic Manipulation of Preference Information in Multi-Criteria Group Decision Methods

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  • Rudolf Vetschera

    (University of Vienna)

Abstract

When group decisions involve the allocation of resources to group members, the members might have an incentive to strategically distort any information they provide in order to increase their share of resources. The paper compares several multi-criteria group decision methods with respect to this problem. We show, using a computational model, that strategic manipulation of preference information is possible in all of the methods considered, although to a different extent. Furthermore, when the solution a method generates under correct information is not Pareto-optimal, manipulation attempts might even improve the efficiency of outcomes.

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  • Rudolf Vetschera, 2005. "Strategic Manipulation of Preference Information in Multi-Criteria Group Decision Methods," Group Decision and Negotiation, Springer, vol. 14(5), pages 393-414, September.
    • Handle: RePEc:spr:grdene:v:14:y:2005:i:5:d:10.1007_s10726-005-8918-5
    DOI: 10.1007/s10726-005-8918-5
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    Cited by:

    1. Paula Sarabando & Luís C. Dias & Rudolf Vetschera, 2013. "Mediation with Incomplete Information: Approaches to Suggest Potential Agreements," Group Decision and Negotiation, Springer, vol. 22(3), pages 561-597, May.
    2. Josephine Gatti Schafer & Caleb T Gallemore, 2016. "Biases in multicriteria decision analysis: The case of environmental planning in Southern Nevada," Environment and Planning C, , vol. 34(8), pages 1652-1675, December.

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