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On policy interactions among nations : when do cooperation and commitment matter ?

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Abstract

This paper offers a framework to study commitment and cooperation issues in games with multiple policymakers. To reconcile some puzzles in the recent literature on the nature of policy interactions among nations, we prove that games characterized by different commitment and cooperation schemes can admit the same equilibrium outcome if certain spillover effects vanish at the common solution of these games. We provide a detailed discussion of these spillovers, showing that, in general, commitment and cooperation are non-trivial issues. Yet, in linear-quadratic models with multiple policymakers commitment and cooperation schemes are shown to become irrelevant under certain assumptions. The framework is sufficiently general to cover a broad range of results from the recent literature on policy interactions as special cases, both within monetary unions and among fully sovereign nations.

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Paper provided by Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne in its series Documents de travail du Centre d'Economie de la Sorbonne with number v08071.

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Length: 38 pages
Date of creation: Dec 2008
Date of revision:
Handle: RePEc:mse:cesdoc:v08071

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Keywords: Credibility; commitment; monetary policy; fiscal policy; policy mix.;

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Cited by:
  1. Roel Beetsma & Massimo Giuliodori, 2010. "The Macroeconomic Costs and Benefits of the EMU and Other Monetary Unions: An Overview of Recent Research," Journal of Economic Literature, American Economic Association, vol. 48(3), pages 603-41, September.
  2. Kempf, Hubert & von Thadden, Leopold, 2013. "When do cooperation and commitment matter in a monetary union?," Journal of International Economics, Elsevier, vol. 91(2), pages 252-262.

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