英文摘要 |
The U.S. and Japan are traditionally the two closest trading partners of Taiwan. Previous studies on Taiwan/U.S. and Taiwan/Japan purchasing power parities (PPPs) and their influence factors, however, provide unclear answers. This study explores the evidence of and the influence factors on the long-run Taiwan/U.S. and Taiwan/Japan PPPs as well as PPPs under different exchange rate regimes. We employ the longest available exchange rate data series of the New Taiwan Dollar, consider two influence factors of the Balassa-Samuelson (BS) effect and structural change, and apply the newly developed Fourier form unit-root and stationarity tests. The empirical results show no evidence of long-run Taiwan/U.S. and Taiwan/Japan PPPs as well as PPPs for different regimes. Infact, the influence factors on Taiwan/U.S. and Taiwan/Japan PPPs are different. For the long-run Taiwan/U.S. PPP and PPPs of different regimes, structural change is the main factor. In contrast, the BS effect is the main factor for the long-run Taiwan/Japan PPP, whereby only under a floating regime can both factors influence the support for PPP. The empirical findings reveal that both structural change and the BS effect should be considered in PPP-related studies. Moreover, the influence factors on PPP might be different even if all the countries explored are close trading partners, which is noteworthy for the application of the PPP hypothesis. |