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Towards solving the PPP puzzle: evidence from 113 countries

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  • Mohsen Bahmani-Oskooee
  • Ali Kutan
  • Su Zhou

Abstract

Several different approaches have been followed by researchers to test the validity of Purchasing Power Parity (PPP). Since the introduction of the unit-root tests, researchers have applied a battery of these tests to determine whether the real exchange rates are stationary. If the answer is in the affirmative, PPP is validated. While application of the standard augmented Dickey-Fuller test has not provided much support for PPP, a test that incorporates nonlinearity in the rates has. Under both tests, however, the null of nonstationary is tested against the alternative of stationarity. In this article, when we switch the null with the alternative and apply Kwiatkowski et al. (1992) test, we provide relatively more support for the theory, getting closer and closer towards solving the PPP puzzle.

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  • Mohsen Bahmani-Oskooee & Ali Kutan & Su Zhou, 2009. "Towards solving the PPP puzzle: evidence from 113 countries," Applied Economics, Taylor & Francis Journals, vol. 41(24), pages 3057-3066.
    • Handle: RePEc:taf:applec:v:41:y:2009:i:24:p:3057-3066
    DOI: 10.1080/00036840701367648
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    2. Arize, Augustine C. & Malindretos, John & Nam, Kiseok, 2010. "Cointegration, dynamic structure, and the validity of purchasing power parity in African countries," International Review of Economics & Finance, Elsevier, vol. 19(4), pages 755-768, October.
    3. Ho, Catherine S.F. & Ariff, M., 2012. "Time to equilibrium in exchange rates: G-10 and Eastern European economies," Global Finance Journal, Elsevier, vol. 23(2), pages 94-107.
    4. M. Ariff & A. Zarei, 2016. "Exchange Rate Behavior of Canada, Japan, the United Kingdom and the United States," Open Economies Review, Springer, vol. 27(2), pages 341-357, April.
    5. Tuck Cheong Tang, 2010. "Real Exchange Rates and Real Interest Differentials: The Case of a Transitional Economy - Cambodia," Monash Economics Working Papers 08-10, Monash University, Department of Economics.
    6. Su, Chi-Wei & Tsangyao, Chang & Chang, Hsu-Ling, 2011. "Purchasing power parity for fifteen Latin American countries: Stationary test with a Fourier function," International Review of Economics & Finance, Elsevier, vol. 20(4), pages 839-845, October.
    7. Catherine Ho & M. Ariff, 2011. "Sticky prices and time to equilibrium: evidence from Asia-Pacific trade-related economies," Applied Economics, Taylor & Francis Journals, vol. 43(21), pages 2851-2861.
    8. Mohamed Ariff & Alireza Zarei, 2018. "One Approach To Resolve The Exchange Rate Puzzle: Results Using Data From The United Kingdom And The United States," The Singapore Economic Review (SER), World Scientific Publishing Co. Pte. Ltd., vol. 63(05), pages 1367-1384, December.
    9. He, Huizhen & Chou, Ming Che & Chang, Tsangyao, 2014. "Purchasing power parity for 15 Latin American countries: Panel SURKSS test with a Fourier function," Economic Modelling, Elsevier, vol. 36(C), pages 37-43.
    10. Arize, Augustine C., 2011. "Purchasing power parity in LDCs: An empirical investigation," Global Finance Journal, Elsevier, vol. 22(1), pages 56-71.
    11. Xie, Zixiong & Chen, Shyh-Wei & Hsieh, Chun-Kuei, 2021. "Facing up to the polysemy of purchasing power parity: New international evidence," Economic Modelling, Elsevier, vol. 98(C), pages 247-265.

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