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Parity Reversion in Real Exchange Rates: Fast, Slow or Not At All?

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  • Mr. C. John McDermott
  • Mr. Paul Cashin

Abstract

Consensus estimates put the half-life of deviations from purchasing power parity (PPP) at about four years (Rogoff, 1996). However, conventional least squares estimates of half-lives are biased downward. Accordingly, as a preferred measure of the persistence of real exchange rate shocks, this study uses median-unbiased estimators of the half-life of deviations from parity, which correct for the downward bias of conventional estimators. The paper tests for PPP using real effective exchange rate data for 90 developed and developing countries in the post-Bretton Woods period. Support for PPP is found, as the majority of countries experience finite deviations of real exchange rates from parity. The speed of parity reversion is found to be typically much faster for developed countries than for developing countries, and to be considerably faster for countries with flexible nominal exchange rate regimes in comparison with countries having fixed nominal exchange rate regimes.

Suggested Citation

  • Mr. C. John McDermott & Mr. Paul Cashin, 2004. "Parity Reversion in Real Exchange Rates: Fast, Slow or Not At All?," IMF Working Papers 2004/128, International Monetary Fund.
  • Handle: RePEc:imf:imfwpa:2004/128
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    3. Luis Fernando Melo Velandia & Óscar Reinaldo Becerra Camargo, 2008. "Una descripción de la dinámica de las tasas de interés de corto plazo en Colombia," Monetaria, CEMLA, vol. 0(2), pages 145-173, julio-sep.
    4. Derek Bond & Michael Harrison & Edward O'Brien, 2011. "Nonlinearity and structural breaks in Irish PPP relationships: an application of random field regression," Applied Economics, Taylor & Francis Journals, vol. 43(15), pages 1899-1911.
    5. Hausmann, Ricardo & Panizza, Ugo & Rigobon, Roberto, 2006. "The long-run volatility puzzle of the real exchange rate," Journal of International Money and Finance, Elsevier, vol. 25(1), pages 93-124, February.
    6. Curran, Michael & Velic, Adnan, 2019. "Real exchange rate persistence and country characteristics: A global analysis," Journal of International Money and Finance, Elsevier, vol. 97(C), pages 35-56.
    7. Jorge Miranda P., 2013. "Deviation of the purchasing power parity hypothesis and equilibrium real exchange rate: Chile 1986-2011," Journal Economía Chilena (The Chilean Economy), Central Bank of Chile, vol. 16(3), pages 04-31, December.
    8. Rodrigo Caputo G. & Marco Núñez N, 2008. "Equilibrium Real Exchange Rate in Chile: Alternative Approaches," Journal Economía Chilena (The Chilean Economy), Central Bank of Chile, vol. 11(2), pages 59-77, August.
    9. Elizabeth Bucacos, 2008. "Real (effective) exchange rate in Uruguay: a periodic cointegration approach," Monetaria, CEMLA, vol. 0(2), pages 265-289, julio-sep.
    10. Derek Bond & Michael J. Harrison & Edward J. O'Brien, 2006. "Purchasing Power Parity: The Irish Experience Re-visited," Trinity Economics Papers tep200615, Trinity College Dublin, Department of Economics.
    11. Antoine Martin & Cyril Monnet, 2008. "Marcos de implementación de la política monetaria: un análisis comparativo," Monetaria, CEMLA, vol. 0(2), pages 221-262, julio-sep.
    12. Tian, Mary, 2018. "Tradability of output, business cycles and asset prices," Journal of Financial Economics, Elsevier, vol. 128(1), pages 86-102.
    13. Rodrigo Caputo G. & Marco Núñez N. & Rodrigo O. Valdés P., 2008. "Exchange Rate Analysis in Practice," Journal Economía Chilena (The Chilean Economy), Central Bank of Chile, vol. 11(1), pages 61-91, April.
    14. Junttila, Juha & Korhonen, Marko, 2011. "Nonlinearity and time-variation in the monetary model of exchange rates," Journal of Macroeconomics, Elsevier, vol. 33(2), pages 288-302, June.
    15. Rodrigo Caputo G. & Marco Núñez N. & Rodrigo Valdés P., 2008. "Análisis del tipo de cambio en la práctica," Investigación Conjunta-Joint Research, in: Centro de Estudios Monetarios Latinoamericanos (CEMLA) (ed.), Estimación y Uso de Variables no Observables en la Región, edition 1, volume 1, chapter 11, pages 313-364, Centro de Estudios Monetarios Latinoamericanos, CEMLA.
    16. Fernando N. de Oliveira, 2008. "Canal de crédito bancario en Brasil: evidencia de la oferta de crédito bancario y de la composición del financiamiento externo de las empresas," Monetaria, CEMLA, vol. 0(2), pages 175-220, julio-sep.
    17. Mohsen Bahmani‐Oskooee & Scott W. Hegerty, 2009. "Purchasing Power Parity In Less‐Developed And Transition Economies: A Review Paper," Journal of Economic Surveys, Wiley Blackwell, vol. 23(4), pages 617-658, September.
    18. International Monetary Fund, 2006. "Belize: Selected Issues and Statistical Appendix," IMF Staff Country Reports 2006/370, International Monetary Fund.
    19. Miranda, Jorge, 2012. "Tipo de Cambio Real en Chile: Dinámica, Tendencia y Equilibrio [Real Exchange Rate in Chile: Dynamics, Trend and Equilibrium]," MPRA Paper 43076, University Library of Munich, Germany.
    20. Adnan Velic, 2024. "Current Account Imbalances, Real Exchange Rates, and Nominal Exchange Rate Variability," Open Economies Review, Springer, vol. 35(3), pages 497-545, July.

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    More about this item

    Keywords

    WP; least squares; rank correlation; null hypothesis; Parity reversion; real exchange rate; post-Bretton Woods; market data; nominal exchange rate regime; deviations from parity; exchange rate country; time series; nonparametric test; parity deviation; inflation rate; Real exchange rates; Purchasing power parity; Exchange rates; Exchange rate arrangements; Real effective exchange rates; Western Hemisphere;
    All these keywords.

    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics

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