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Stabilität und institutionelles Design einer nichtoptimalen Währungsunion: spieltheoretische Bedingungen für eine Lösung der Euro-Krise

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  • Henning Vöpel

Abstract

The causes for the Euro crisis are lying in a missing adjustment mechanism in order to absorb asymmetric shocks and in adverse incentives (moral hazard) due to external costs stemming from systemic risks of a break-up of the eurozone. Until now Europe's politicians have failed to respond to the crisis in a way to find a solution. This analysis sets out game-theoretical requirements for an institutional design that is able to permanently stabilize a non-optimal currency area. It is shown that an adjustment mechanism and, in addition, an exit option or a supranational fiscal policy institution are required fill the institutional gap that still exists in the eurozone. An adequate institutional design must change the "game" in order to make a stability union a sub-game perfect equilibrium and hence a credible solution. Die beiden zentralen Ursachen der Euro-Krise liegen in einem fehlenden Ausgleichsmechanismus zur Absorption asymmetrischer Schocks und in immanenten Fehlanreizen (moral hazard) infolge externer Kosten eines systemischen Zusammenbruchs der Eurozone. Die bisherigen Antworten der Politik vermochten die Euro-Krise bislang nicht zu beenden. Der vorliegende Artikel untersucht aus spieltheoretischer Sicht die Bedingungen für ein institutionelles Design, für das ein nichtoptimaler Währungsraum dauerhaft stabilisiert werden kann. Es zeigt sich, dass die Eurozone dafür einen Umverteilungsmechanismus und gleichzeitig eine Ausschlussoption oder ein zentrales Eingriffsrecht benötigt. Das institutionelle Design muss das "Spiel" so verändern, dass die Durchsetzung von Stabilisierungsmaßnahmen teilspielperfekt und somit glaubwürdig wird.

Suggested Citation

  • Henning Vöpel, 2013. "Stabilität und institutionelles Design einer nichtoptimalen Währungsunion: spieltheoretische Bedingungen für eine Lösung der Euro-Krise," Vierteljahrshefte zur Wirtschaftsforschung / Quarterly Journal of Economic Research, DIW Berlin, German Institute for Economic Research, vol. 82(2), pages 61-75.
  • Handle: RePEc:diw:diwvjh:82-2-6
    DOI: 10.3790/vjh.82.2.61
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    References listed on IDEAS

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    1. Straubhaar Thomas & Vöpel Henning, 2012. "Stabilisierung einer nicht-optimalen Europäischen Währungsunion," Zeitschrift für Wirtschaftspolitik, De Gruyter, vol. 61(1), pages 57-68, April.
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    More about this item

    Keywords

    Euro crisis; non-optimal currency area; institutional design; subgame-perfect stability;
    All these keywords.

    JEL classification:

    • C7 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory
    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System
    • F33 - International Economics - - International Finance - - - International Monetary Arrangements and Institutions

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