1.1 Research objectives
Testing the PPP hypothesis is important since it is used, implicitly or explicitly, at least as a long-run relationship, in much of current international monetary economics. For example, early monetary models of the exchange rate assume continuous purchasing power parity, whilst sticky-price exchange rate models of the kind originally developed by Dornbusch (1976) allow the exchange rate to deviate from purchasing power parity in the short-run, although it is retained as a long-run equilibrium condition. Despite all that, the existence of the long-run equilibrium of purchasing power parity is still a puzzle. So the purpose of this research is to provide some further tests for long run PPP hypothesis.
Several objectives are expected to be achieved in the research:
i. To have a comprehensive understanding the importance about purchasing power parity.
ii. To provide different models to testing the long run PPP hypothesis.
iii. To collect data that is relevant to the research.
iv. To find empirical evidences of whether the long run PPP hypothesis exists.
v. Compared each model to provide a more correct empirical result.
1.1研究目标
测试PPP假说是重要的，因为它是用来含蓄或明确，至少有一个长远的关系，在当前的国际货币经济学大部分。例如，早期的货币汇率模型假设连续购买力平价，而粘性价格的汇率模型的那种最初由多恩布什（1976）允许汇率偏离购买力平价在短期来看，虽然它被保留作为长期均衡条件。尽管如此，购买力平价的长期均衡的存在仍是一个谜。因此，本研究的目的是长期的购买力平价假说提供一些进一步的测试。
的研究，预计要达到几个目标：
（一）为了有一个全面的了解购买力平价的重要性。
二。为了提供不同型号的测试从长远看购买力平价假说。
III。为了收集相关研究数据。
四。为了找到从长远来看是否存在购买力平价假说的实证证据。
诉相比，每个模型提供一个更正确的实证结果。
