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The Yen Real Exchange Rate May Be Stationary after All: Evidence from Nonlinear Unit-Root Tests

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Author Info
Georgios Chortareas (University of Connecticut)
George Kapetanios () (Queen Mary, University of London)

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Abstract

The empirical literature that tests for purchasing power parity (PPP) by focusing on the stationarity of real exchange rates has so far provided, at best, mixed results. The yen real exchange rate behavior, as compared to other major currencies, has most stubornly challenged the PPP hypothesis and deepened this puzzle. This paper contributes to this discussion by providing new evidence on the stationarity of bilateral yen real exchange rates. We employ a non-linear version of the Augmented Dickey-Fuller test, based on an exponentially smooth-transition autogregressive model (ESTAR) that enhances the power of the tests against mean-reverting nonlinear alternative hypotheses. Our results suggest that the bilateral yen real exchange rates against the other G7 and Asian currencies were mean reverting during the post-Bretton Woods era. Thus, the real yen behavior may not be so different after all but simply perceived to be so due to the use of a restrictive alternative hypothesis in previous tests.

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Paper provided by Queen Mary, University of London, Department of Economics in its series Working Papers with number 484.

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Date of creation: Jan 2003
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Handle: RePEc:qmw:qmwecw:wp484

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Keywords: PPP Yen Real exchange rates Nonlinear models ESTAR models

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Find related papers by JEL classification:
C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data
F31 - International Economics - - International Finance - - - Foreign Exchange

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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Full references

Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Yunus Aksoy & Miguel A. Leon-Ledesma, 2007. "Non-linearities and Unit Roots in G7 Macroeconomic Variables," Birkbeck Working Papers in Economics and Finance 0710, Birkbeck, School of Economics, Mathematics & Statistics. [Downloadable!]
    Other versions:
  2. Kurmas Akdogan & Yunus Aksoy, 2007. "Exchange Rates and Fundamentals : Is there a Role for Nonlinearities in Real Time?," Working Papers 0703, Research and Monetary Policy Department, Central Bank of the Republic of Turkey. [Downloadable!]
    Other versions:
  3. Mohsen Bahmani-Oskooee & Abera Gelan, 2006. "Testing the PPP in the non-linear STAR Framework: Evidence from Africa," Economics Bulletin, Economics Bulletin, vol. 6(17), pages 1-15. [Downloadable!]
  4. Daiki Maki, 2006. "Variance ratio tests for a unit root in the presence of a mean shift: small sample properties and an application to purchasing power parity," Applied Financial Economics, Taylor and Francis Journals, vol. 16(8), pages 607-615, May. [Downloadable!] (restricted)
  5. Su Zhou & Mohsen Bahmani-Oskooee & Ali M. Kutan, 2008. "Purchasing Power Parity before and after the Adoption of the Euro," Review of World Economics (Weltwirtschaftliches Archiv), Springer, vol. 144(1), pages 134-150, April. [Downloadable!] (restricted)
  6. Mark Holmes & Ping Wang, 2006. "Asymmetric adjustment towards long-run PPP: Some new evidence for Asian economies," International Economic Journal, Korean International Economic Association, vol. 20(2), pages 161-177, June. [Downloadable!] (restricted)
  7. Liew , Venus Khim-Sen & Baharumshah, Ahmad Zubaidi & Habibullah, Muzafar Shah & Midi, Habshah, 2008. "Monetary exchange rate model: supportive evidence from nonlinear testing procedures," MPRA Paper 7293, University Library of Munich, Germany. [Downloadable!]
  8. Paresh Kumar Narayan & Biman Chand Prasad, 2005. "The validity of purchasing power parity hypothesis for eleven middle eastern countries," Review of Middle East Economics and Finance, Taylor and Francis Journals, vol. 3(2), pages 135-149, August. [Downloadable!] (restricted)
    Other versions:
  9. Paresh Kumar Narayan, 2005. "New evidence on purchasing power parity from 17 OECD countries," Applied Economics, Taylor and Francis Journals, vol. 37(9), pages 1063-1071, May. [Downloadable!] (restricted)
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