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Power Measurement as Sensitivity Analysis

Author

Listed:
  • Stefan Napel

    (University of Hamburg, napel@econ.uni-hamburg.de)

  • Mika Widgren

    (Turku School of Economics and Business Administration, mika.widgren@tukku.fi)

Abstract

This paper proposes a unified framework that integrates the traditional index-based approach and the competing non-cooperative approach to power analysis. It rests on a quantifiable notion of ex post power as the (counter-factual) sensitivity of the expected or observed outcome to individual players. Thus, it formalizes players’ marginal impact on outcomes in both cooperative and non-cooperative games, for both strategic interaction as well as purely random behavior. By taking expectations with respect to preferences, actions, and procedures, one obtains meaningful measures of ex ante power. Established power indices turn out to be special cases.

Suggested Citation

  • Stefan Napel & Mika Widgren, 2004. "Power Measurement as Sensitivity Analysis," Journal of Theoretical Politics, , vol. 16(4), pages 517-538, October.
  • Handle: RePEc:sae:jothpo:v:16:y:2004:i:4:p:517-538
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    File URL: http://jtp.sagepub.com/content/16/4/517.abstract
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    1. repec:zbw:rwirep:0175 is not listed on IDEAS
    2. repec:spr:grdene:v:19:y:2010:i:6:d:10.1007_s10726-009-9157-y is not listed on IDEAS
    3. repec:kap:regeco:v:53:y:2018:i:2:d:10.1007_s11149-018-9354-1 is not listed on IDEAS
    4. Zaporozhets, Vera & García-Valiñas, María & Kurz, Sascha, 2016. "Key drivers of EU budget allocation: Does power matter?," European Journal of Political Economy, Elsevier, vol. 43(C), pages 57-70.
    5. Freixas, Josep & Pons, Montserrat, 2008. "Circumstantial power: Optimal persuadable voters," European Journal of Operational Research, Elsevier, vol. 186(3), pages 1114-1126, May.
    6. Nicola Maaser & Alexander Mayer, 2016. "Codecision in context: implications for the balance of power in the EU," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 46(1), pages 213-237, January.
    7. Ansgar Belke & Barbara von Schnurbein, 2010. "European Monetary Policy and the ECB Rotation Model – Voting Power of the Core versus the Periphery," Ruhr Economic Papers 0175, Rheinisch-Westfälisches Institut für Wirtschaftsforschung, Ruhr-Universität Bochum, Universität Dortmund, Universität Duisburg-Essen.
    8. repec:spr:homoec:v:35:y:2018:i:1:d:10.1007_s41412-018-0065-8 is not listed on IDEAS

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