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Le taux de change réel d'équilibre : une introduction

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  • Hervé Joly
  • Céline Prigent
  • Nicolas Sobczak

Abstract

[fre] Le taux de change réel d'équilibre : une introduction par Hervé Joly, Céline Prigent, Nicolas Sobczak . Cet article présente les deux principales théories du taux de change réel d'équilibre. La première approche repose sur un modèle d'équilibre général intertemporel à deux secteurs; elle définit le taux de change réel comme le prix relatif des biens échangeables par rapport aux biens non-échangeables. Elle est la plus achevée d'un point de vue théorique mais est complexe à mettre en oeuvre empiriquement. La seconde approche est plus "macro-économique". Le change réel y est défini comme un indicateur de compétitivité; son niveau d'équilibre permet d'atteindre l'équilibre externe tout en étant compatible avec l'équilibre interne. Le calcul empirique est plus aisé et s'appuie les mécanismes les plus robustes inscrits dans les modèles macro-économétriques. Ces deux approches présentent des points communs, en particulier une définition intertemporelle de l'équilibre extérieur. Elles paraissent par ailleurs largement complémentaires dans la mesure où elles se réfèrent implicitement à des horizons temporels différents. [eng] The Real Equilibrium Exchange Rate: An Introduction by Hervé Joly, Céline Prigent and Nicolas Sobczak . This article presents the two main real equilibrium exchange rate theories. The first approach is based on a two-sector general equilibrium model. It defines the real exchange rate as the relative price of tradeable goods compared with goods. It is the most complete as a theory, but its empirical application is complicated. The second approach is "macroeconomic". The real exchange rate is defined here as a competitiveness indicator. Its equilibrium level enables equilibrium to be attained whilst remaining compatible with internal equilibrium. The empirical calculation is easier and uses most robust mechanisms in macroeconometric models. These two approaches have certain points in common, notably intertemporal definition of external equilibrium. They moreover appear to be largely complementary insofar as they implicitly to different forecasting periods.

Suggested Citation

  • Hervé Joly & Céline Prigent & Nicolas Sobczak, 1996. "Le taux de change réel d'équilibre : une introduction," Économie et Prévision, Programme National Persée, vol. 123(2), pages 1-21.
  • Handle: RePEc:prs:ecoprv:ecop_0249-4744_1996_num_123_2_5787
    DOI: 10.3406/ecop.1996.5787
    Note: DOI:10.3406/ecop.1996.5787
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    1. Antoine Bouveret & Bruno Ducoudre, 2007. "On the Contingency of Equilibrium Exchange Rates with Time - Consistent Economic Policies," SciencePo Working papers Main hal-01066080, HAL.
    2. repec:spo:wpecon:info:hdl:2441/6125 is not listed on IDEAS
    3. Hoarau, Jean-François, 2013. "Un modèle NATREX synthétique pour une petite économie « développée » ouverte contrainte sur les marchés internationaux de capitaux," L'Actualité Economique, Société Canadienne de Science Economique, vol. 89(4), pages 259-303, Décembre.
    4. repec:hal:spmain:info:hdl:2441/5221 is not listed on IDEAS
    5. Michel Aglietta & Camille Baulant & Virginie Coudert, 1997. "Why the Euro will be Strong: an Approach Based on Equilibrium Exchange Rates," Working Papers 1997-18, CEPII research center.
    6. repec:hal:wpspec:info:hdl:2441/6125 is not listed on IDEAS
    7. Carton, Benjamin & Hervé, Karine, 2012. "Estimation of consistent multi-country FEERs," Economic Modelling, Elsevier, vol. 29(4), pages 1205-1214.
    8. repec:hal:spmain:info:hdl:2441/6125 is not listed on IDEAS
    9. Bruno Ducoudre, 2008. "Structure par terme des taux d’intérêt et anticipations de la politique économique," Sciences Po publications info:hdl:2441/5221, Sciences Po.
    10. Hoarau, Jean-François, 2009. "L’approche microéconomique du taux de change réel d’équilibre : une revue de la littérature théorique," L'Actualité Economique, Société Canadienne de Science Economique, vol. 85(4), pages 403-436, décembre.

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