EconStor >
Christian-Albrechts-Universität Kiel (CAU) >
Department of Economics, Universität Kiel  >
Economics Working Papers, Department of Economics, CAU Kiel >

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10419/22040
  
Title:Does Purchasing Power Parity Hold Sometimes? Regime Switching in Real Exchange Rates PDF Logo
Authors:Lee, Hwa-Taek
Yoon, Gawon
Issue Date:2007
Series/Report no.:Economics working paper / Christian-Albrechts-Universität Kiel, Department of Economics 2007,24
Abstract:Real exchange rates are quite persistent. Standard unit root tests are not very powerful in drawing a conclusion regarding the validity of purchasing power parity [PPP]. Rather than asking if PPP holds throughout the whole sample period, we examine if PPP holds sometimes by employing Hamilton-type (1989) Markov regime switching models. There are various reasons that the persistence of real exchange rates changes over time. When at least one of multiple regimes is stationary, PPP holds locally within the regime. Employing 5 real exchange rates spanning more than 100 years, we find strong evidence that the strength of PPP is changing over time. We make comparisons to an early work throughout the article. The new model selection criterion, provided by Smith et al. (2006), called the Markov switching criterion devised especially for discriminating Markov regime switching models, unambiguously indicates a preference for the Hamiltontype Markov regime switching model employed in this article. Also, the evidence for PPP is not much different during the Bretton-Woods and current float periods whether PPP holds or not.
Subjects:Regime switching
real exchange rates
Markov switching criterion
purchasing power parity
JEL:F31
C22
Document Type:Working Paper
Appears in Collections:Economics Working Papers, Department of Economics, CAU Kiel

Files in This Item:
File Description SizeFormat
EWP-2007-24.pdf776.02 kBAdobe PDF
No. of Downloads: Counter Stats
Download bibliographical data as: BibTeX
Share on:http://hdl.handle.net/10419/22040

Items in EconStor are protected by copyright, with all rights reserved, unless otherwise indicated.