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Strategic Power Revisited

Author Info

Listed author(s):
  • Stefan Napel
  • Mika Widgrén

Abstract

Traditional power indices ignore preferences and strategic interaction. Equilibrium analysis of particular non-cooperative decision procedures is unsuitable for normative analysis and assumes typically unavailable information. These points drive a lingering debate about the right approach to power analysis. A unified framework that works both sides of the street is developed here. It rests on a notion of a posteriori power which formalizes players' marginal impact to outcomes in cooperative and non-cooperative games, for strategic interaction and purely random behaviour. Taking expectations with respect to preferences, actions, and procedures then defines a meaningful a priori measure. Established indices turn out to be special cases.

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File URL: http://www.cesifo-group.de/portal/page/portal/DocBase_Content/WP/WP-CESifo_Working_Papers/wp-cesifo-2002/wp-cesifo-2002-05/736.pdf
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Paper provided by CESifo Group Munich in its series CESifo Working Paper Series with number 736.

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Date of creation: 2002
Handle: RePEc:ces:ceswps:_736
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Keywords: power indices; spatial voting; equilibrium analysis; decision procedures;

References listed on IDEAS
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  1. Crombez, Christophe, 1996. "Legislative Procedures in the European Community," British Journal of Political Science, Cambridge University Press, vol. 26(02), pages 199-228, April.
  2. Sven Hansson, 1996. "Social choice with procedural preferences," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 13(2), pages 215-230, April.
  3. Moser, Peter, 1997. "A Theory of the Conditional Influence of the European Parliament in the Cooperation Procedure," Public Choice, Springer, vol. 91(3-4), pages 333-350, June.
  4. Philip Straffin, 1977. "Homogeneity, independence, and power indices," Public Choice, Springer, vol. 30(1), pages 107-118, June.
  5. Mika Widgrén & Stefan Napel, 2001. "Inferior players in simple games," International Journal of Game Theory, Springer;Game Theory Society, vol. 30(2), pages 209-220.
  6. Hosli, Madeleine O., 1993. "Admission of European Free Trade Association states to the European Community: effects on voting power in the European Community Council of Ministers," International Organization, Cambridge University Press, vol. 47(04), pages 629-643, September.
  7. Laruelle, Annick & Widgren, Mika, 1998. "Is the Allocation of Voting Power among EU States Fair?," Public Choice, Springer, vol. 94(3-4), pages 317-339, March.
  8. Moshé Machover & Dan S. Felsenthal, 2001. "The Treaty of Nice and qualified majority voting," Social Choice and Welfare, Springer;The Society for Social Choice and Welfare, vol. 18(3), pages 431-464.
  9. Gul, Faruk, 1989. "Bargaining Foundations of Shapley Value," Econometrica, Econometric Society, vol. 57(1), pages 81-95, January.
  10. Jan-Erik Lane & Sven Berg, 1999. "Relevance of Voting Power," Journal of Theoretical Politics, , vol. 11(3), pages 309-320, July.
  11. Baldwin, Richard & Berglöf, Erik & Giavazzi, Francesco & Widgrén, Mika, 2000. "EU Reforms for Tomorrow’s Europe," CEPR Discussion Papers 2623, C.E.P.R. Discussion Papers.
  12. Guillermo Owen, 1972. "Multilinear Extensions of Games," Management Science, INFORMS, vol. 18(5-Part-2), pages 64-79, January.
  13. Hart, Sergiu & Mas-Colell, Andreu, 1996. "Bargaining and Value," Econometrica, Econometric Society, vol. 64(2), pages 357-380, March.
  14. Dan S. Felsenthal & Moshé Machover, 2001. "Myths and Meanings of Voting Power," Journal of Theoretical Politics, , vol. 13(1), pages 81-97, January.
  15. Leech, Dennis, 2002. "Designing the Voting System for the Council of the European Union," Public Choice, Springer, vol. 113(3-4), pages 437-464, December.
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Cited by:

  1. Mika Widgrén, 2003. "Enlargements and the Principles of Designing EU - Decision-Making Procedures," CESifo Working Paper Series 903, CESifo Group Munich.
  2. Manfred Holler & Stefan Napel, 2005. "Local monotonicity of power: Axiom or just a property?," Quality & Quantity: International Journal of Methodology, Springer, vol. 38(5), pages 637-647, January.
  3. Mika Widgrén, 2008. "The Impact of Council's Internal Decision-Making Rules on the Future EU," Discussion Papers 26, Aboa Centre for Economics.
  4. Napel, Stefan & Widgrén, Mika, 2003. "EU Conciliation Committee: Council 56 versus Parliament 6," CEPR Discussion Papers 4071, C.E.P.R. Discussion Papers.
  5. Mika Widgren, 2003. "Power in the Design of Constitutional Rules," European Economy Group Working Papers 23, European Economy Group.

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