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Purchasing Power Parity When Prices Are I(2)

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  • Crowder, William J

Abstract

This paper examines the purchasing power parity (PPP) hypothesis over the modern float using data on 15 OECD currencies. Evidence is presented that suggests the price levels evolve as second-difference stationary processes, i.e., integrated of order two (P(subscript t) is approximately I(2)). A necessary condition for PPP when prices are I(2) is that prices are cointegrated across countries to an I(1) relative price. In general this relative price is not the same as the simple price ratio. For some of the relationships examined, this relative price level is cointegrated with the exchange rate, implying a long-run equilibrium between nominal exchange rates and prices. Copyright 1996 by Blackwell Publishing Ltd.

Suggested Citation

  • Crowder, William J, 1996. "Purchasing Power Parity When Prices Are I(2)," Review of International Economics, Wiley Blackwell, vol. 4(2), pages 234-246, June.
    • Handle: RePEc:bla:reviec:v:4:y:1996:i:2:p:234-46
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    Cited by:

    1. Arize, Augustine C. & Malindretos, John & Ghosh, Dilip, 2015. "Purchasing power parity-symmetry and proportionality: Evidence from 116 countries," International Review of Economics & Finance, Elsevier, vol. 37(C), pages 69-85.
    2. Henry, Olan T. & Olekalns, Nilss, 2002. "Does the Australian dollar real exchange rate display mean reversion," Journal of International Money and Finance, Elsevier, vol. 21(5), pages 651-666, October.
    3. 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.
    4. Oladunjoye Opeyemi Nathaniel, 2019. "Validity of Purchasing Power Parity (PPP) Hypothesis in the Ecowas (1980–2017)," Emerging Economy Studies, International Management Institute, vol. 5(2), pages 141-156, November.

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