Purchasing Power Parity Tests in Cointegrated Panels
用协整面板的新方法检验布雷顿森林体系后的购买力平价，发现强版本被拒绝，并引入新的组间动态OLS估计量，发现长期偏离更大。
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 modified and dynamic OLS approaches, and strongly reject the hypothesis. We also introduce a new between-dimension dynamic OLS estimator and find that the between-dimension FMOLS and DOLS estimates of the long-run deviation from purchasing power parity are larger than the corresponding within-dimension estimates. Finally, we attempt to reconcile these rejections with the mixed findings that have been reported in panel unit root studies. © 2001 by the President and Fellows of Harvard College and the Massachusetts Institute of Technology