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A comment on ‘Testing the validity of quasi-PPP hypothesis: evidence from a recent panel unit-root test with structural breaks’/ created by Daniel Ventosa-Santaulària and M. Gómez-Zaldavar

By: Contributor(s): Material type: TextTextSeries: Applied economics letters ; Volume 20, number 2New York: Taylor and Francis, 2013Content type:
  • text
Media type:
  • unmediated
Carrier type:
  • volume
ISSN:
  • 13504851
Subject(s): LOC classification:
  • HB1.A666 APP
Online resources: Abstract: In a recent study, Guloglu et al. (2011) took 18 Turkish real exchange rate series and used a panel unit-root test, which allows for structural breaks in the level and the trend of the real exchange rate. When the practitioner allows for structural breaks, the rejection of the null hypothesis of unit root in the real exchange rate does not imply that Purchasing Power Parity (PPP) holds. The authors claim that they found evidence of Quasi-PPP (Q-PPP). Yet, the latter does not include either linear trend or trend breaks. Their results cannot be considered evidence of either Trend-PPP (T-PPP) or Trend-Qualified PPP (TQ-PPP), since both exclude trend shifts.
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Item type Current library Call number Vol info Copy number Status Notes Date due Barcode
Journal Article Journal Article Main Library - Special Collections HB1.A666 APP (Browse shelf(Opens below)) Vol. 20, no.2 (pages 111-113) SP17971 Not for loan For in house use only

In a recent study, Guloglu et al. (2011) took 18 Turkish real exchange rate series and used a panel unit-root test, which allows for structural breaks in the level and the trend of the real exchange rate. When the practitioner allows for structural breaks, the rejection of the null hypothesis of unit root in the real exchange rate does not imply that Purchasing Power Parity (PPP) holds. The authors claim that they found evidence of Quasi-PPP (Q-PPP). Yet, the latter does not include either linear trend or trend breaks. Their results cannot be considered evidence of either Trend-PPP (T-PPP) or Trend-Qualified PPP (TQ-PPP), since both exclude trend shifts.

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