The Real Exchange Rate, Regime Changes and Volatility Shifts

Daniel Ventosa-Santaulària, Frederick Wallace and Manuel Gómez-Zaldívar

No DTE 551, Working Papers from CIDE, División de Economía

Abstract: We make use of a data set that is both long span and high frequency to test for purchasing power parity while allowing for a structural shift in the volatility of the Mexico-US bilateral real exchange rate. The Kim, Leybourne and Newbold (2002) unit root test, robust to changes in the innovation variance, indicates mean stationarity of the monthly real exchange rate, hence evidence of PPP, for the full sample, 1930-2012 and various subsamples. The persistence of deviations of the real rate from its PPP level as measured by half-lives ranges from 1.37 to 2.41 years.

Keywords: PPP; Structural breaks; Mexico (search for similar items in EconPapers)
JEL-codes: C22 F31 (search for similar items in EconPapers)
Pages: 12 pages
Date: 2013-05
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