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

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...

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Bibliographic Details
Main Author: McDermott, C.
Other Authors: Cashin, Paul
Format: eBook
Language:English
Published: Washington, D.C. International Monetary Fund 2004
Series:IMF Working Papers
Subjects:
Online Access:
Collection: International Monetary Fund - Collection details see MPG.ReNa
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651 4 |a United States 
653 |a Exchange rate arrangements 
653 |a Dynamic Treatment Effect Models 
653 |a Purchasing power parity 
653 |a Real effective exchange rates 
653 |a Open Economy Macroeconomics 
653 |a Currency 
653 |a Diffusion Processes 
653 |a Time-Series Models 
653 |a Foreign Exchange 
653 |a Real exchange rates 
653 |a Dynamic Quantile Regressions 
653 |a Exchange rates 
653 |a Foreign exchange 
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520 |a 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