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Testing the relative purchasing power parity hypothesis: the case of Korea

机译:检验相对购买力平价假设:韩国的情况

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This study examines the relative purchasing power parity (PPP) hypothesis using the data from the Korean won-US dollar and the Korean won-Japanese yen foreign exchange markets. We extract proxies for inflation from stock market returns of Korea, the United States and Japan based on the method used by Chowdhry, Roll and Xia in 2005. We explicitly test the relative PPP hypothesis in light of the short-run price volatility using monthly, bimonthly and quarterly data from 1 January 1998 to 31 December 2012. Our findings suggest that the empirical test results from the entire sample period do not support the relative PPP hypothesis. However, the results from the sample period excluding the Asian Financial Crisis period show that the relative PPP hypothesis holds for the Korean won-US dollar market with a moderate magnitude of inflation impact, but not for the Korean won-Japanese yen market. Abrupt changes in exchange rates during the crisis period may have affected the relationship between inflation and exchange rates. This result also suggests that factors other than inflation might have affected the Korean won Japanese yen exchange rate.
机译:本研究使用韩元兑美元和韩元兑日元外汇市场的数据检验了相对购买力平价(PPP)假设。我们根据Chowdhry,Roll和Xia在2005年使用的方法,从韩国,美国和日本的股票市场收益中提取了通货膨胀的代表。根据短期价格的波动性,我们使用每月,从1998年1月1日到2012年12月31日的双月和季度数据。我们的发现表明,整个样本期间的经验检验结果不支持相对PPP假设。但是,不包括亚洲金融危机时期在内的样本时期的结果表明,相对的PPP假设适用于通货膨胀影响程度适中的韩元兑美元市场,而不适用于韩元兑日元市场。危机期间汇率的突然变化可能影响了通货膨胀与汇率之间的关系。该结果还表明,除了通货膨胀之外,其他因素也可能影响了韩元兑日元的汇率。

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