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Politique monétaire optimale et effet de variété en économie ouverte

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  • Jean-Christophe Poutineau
  • Aurélien Eyquem
  • Stéphane Auray

Abstract

[eng] This article examines how monetary policy should be conducted in an open economy when its influence on the extensive margin of trade is taken into account. In a two-country model, we show that – contrary to the results obtained by Bilbiie et alii (2007 ) – the optimal monetary policy consists in stabilizing consumer prices, as the stabilization of producer prices generates an inadequate adjustment of the real exchange rate. Furthermore, when the intensive margin of trade is factored in, the choice of a fixed exchange-rate regime creates excess macroeconomic volatility that entails a welfare cost when trade flows are significant and when hours worked exhibit high real-wage elasticity. [fre] Cet article étudie la manière dont la politique monétaire doit être conduite en économie ouverte lorsque l’on prend en compte son influence sur la marge extensive de l’activité. Dans un modèle à deux pays, on montre que, contrairement aux résultats obtenus par Bilbiie et alii (2007), la politique monétaire optimale consiste à stabiliser les prix à la consommation, la stabilisation des prix à la production induisant un ajustement insuffisant du taux de change réel. D’autre part, lorsque l’on tient compte de la marge intensive de l’activité, l’adoption d ’ un régime de change fixe entraîne une sur-volatilité macroéconomique qui génère des coûts en termes de bien-être lorsque les relations commerciales sont importantes et que les heures travaillées sont fortement élastiques au salaire réel.

Suggested Citation

  • Jean-Christophe Poutineau & Aurélien Eyquem & Stéphane Auray, 2010. "Politique monétaire optimale et effet de variété en économie ouverte," Économie et Prévision, Programme National Persée, vol. 193(2), pages 43-58.
  • Handle: RePEc:prs:ecoprv:ecop_0249-4744_2010_num_193_2_8033
    DOI: 10.3406/ecop.2010.8033
    Note: DOI:10.3406/ecop.2010.8033
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    1. Florin O. Bilbiie & Fabio Ghironi & Marc J. Melitz, 2008. "Monetary Policy and Business Cycles with Endogenous Entry and Product Variety," NBER Chapters, in: NBER Macroeconomics Annual 2007, Volume 22, pages 299-353, National Bureau of Economic Research, Inc.
    2. Paul R. Bergin & Ching‐Yi Lin, 2009. "Exchange Rate Regimes and the Extensive Margin of Trade," NBER International Seminar on Macroeconomics, University of Chicago Press, vol. 5(1), pages 201-227.
    3. Jordi Galí & Tommaso Monacelli, 2005. "Monetary Policy and Exchange Rate Volatility in a Small Open Economy," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 72(3), pages 707-734.
    4. Michael B. Devereux & Charles Engel, 2003. "Monetary Policy in the Open Economy Revisited: Price Setting and Exchange-Rate Flexibility," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 70(4), pages 765-783.
    5. Faia, Ester, 2008. "Ramsey Monetary Policy With Capital Accumulation And Nominal Rigidities," Macroeconomic Dynamics, Cambridge University Press, vol. 12(S1), pages 90-99, April.
    6. Beetsma, Roel M.W.J. & Jensen, Henrik, 2005. "Monetary and fiscal policy interactions in a micro-founded model of a monetary union," Journal of International Economics, Elsevier, vol. 67(2), pages 320-352, December.
    7. Corsetti, Giancarlo, 2006. "Openness and the case for flexible exchange rates," Research in Economics, Elsevier, vol. 60(1), pages 1-21, March.
    8. Benigno, Pierpaolo, 2004. "Optimal monetary policy in a currency area," Journal of International Economics, Elsevier, vol. 63(2), pages 293-320, July.
    9. Rotemberg, Julio J, 1984. "A Monetary Equilibrium Model with Transactions Costs," Journal of Political Economy, University of Chicago Press, vol. 92(1), pages 40-58, February.
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