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An examination of trade-weighted real exchange rates based on fractional integration

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  • Luis Alberiko Gil-Alana
  • Tommaso Trani

Abstract

Since recent literature has quantified the persistence of changes in the real exchange rate (RER) using trade-weighted data, in this paper we ask whether the trade-weighted RER is mean reverting. We focus on post-Bretton Woods data for the G7 countries and, after revising the strong correlation between the RER and the nominal exchange rate over that period, we follow a fractional integration approach. We consider different assumptions for the residuals and allow for breaks at unknown dates. We conclude that the nonstationary behaviour of the RER is mean reverting (i.e., it is integrated of order dE0.5,1) for about half of the G7 countries and that allowing for structural breaks affects the test results obtained in absence of breaks but do not invalidate them.

Suggested Citation

  • Luis Alberiko Gil-Alana & Tommaso Trani, 2019. "An examination of trade-weighted real exchange rates based on fractional integration," International Economics, CEPII research center, issue 158, pages 64-76.
    • Handle: RePEc:cii:cepiie:2019-q2-158-6
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    More about this item

    Keywords

    Mean reversion; Nonstationarity; Persistence; Fractional integration; Semiparametric methods;
    All these keywords.

    JEL classification:

    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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