FINANCE Purchasing power parity, unit roots, and dynamic structure
نویسنده
چکیده
Recent studies of purchasing power parity (PPP) account for the possible presence of unit roots in nominal exchange rates and relative price indices by applying standard unit-root tests to real exchange rates, which are ratios of nominal exchange rates and relative price indices. These studies occasionally find evidence of PPP, but as a whole, the evidence is not definitive. Standard unit-root tests impose a restrictive dynamic structure between nominal exchange rates and relative price indices. I specify and estimate a generalized dynamic structure. I reject the dynamic restrictions implicit in standard unit-root tests of PPP, and find stronger evidence of PPP than do most other recent studies. JEL classification: F31
منابع مشابه
Pii: S1059-0560(99)00015-5
This study investigates the validity of purchasing power parity (PPP) hypothesis as a long run equilibrium condition for thirteen Asia Pacific economies using a generalized error correction model. The results of the generalized dynamic specification appear to support PPP for more countries than do standard tests for unit roots. Out of the thirteen bilateral exchange rates, evidence of PPP is fo...
متن کاملPurchasing Power Parity Hypothesis In OIC Countries: Evidence From Panel Unit Root Tests With Heterogeneous Structural Breaks
متن کامل
Testing Purchasing Power Parity in the Long-Run
This paper studies the validity of the long-run purchasing parity hypothesis. The five currencies of interest in this study are the U.S. dollar, the U.K. pound sterling, the German mark, the French franc, and the Japanese yen. I attempt two approaches to test the long-run PPP hypothesis. First, I test for unit roots of the real exchange rates themselves. Second, I examine the cointegration rela...
متن کاملNonlinear Adjustment to Purchasing Power Parity in the post-Bretton Woods Era
Nonlinear Adjustment to Purchasing Power Parity in the post-Bretton Woods Era Christopher F. Baum Department of Economics Boston College John T. Barkoulas Department of Economics and Finance Louisiana Tech University Mustafa Caglayan Department of Economics and Finance University of Durham, UK This paper models the dynamics of adjustment to long-run PPP over the post-Bretton Woods period in a n...
متن کاملPurchasing Power Parity Tests in Cointegrated Panels
This paper employs recently developed techniques for testing hypotheses in cointegrated panels to test the strong version of purchasing power parity for a panel of post Bretton Woods data. We compare results using fully modi ed and dynamic OLS approaches , and strongly reject the hypothesis . We also introduce a new between-dimensio n dynamic OLS estimator and nd that the between-dimensio n ...
متن کامل