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Why PPP Real Exchange Rates Mislead

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  • Larry A. Sjaastad

Abstract

This paper investigates the properties of the purchasing-power-parity (PPP) real exchange rate as a proxy for the true real exchange rate, which is defined as the relative price of traded goods. It finds that the PPP real exchange rate is prone to measurement error and examines the nature of that error. Measurement error is defined as the fraction of the variance of the PPP real exchange rate that has no counterpart in the true real exchange rate. That measurement error is estimated for seven small countries and the results indicate that, in most cases, the error component of PPP real exchange rates is extremely high.

Suggested Citation

  • Larry A. Sjaastad, 1998. "Why PPP Real Exchange Rates Mislead," Journal of Applied Economics, Taylor & Francis Journals, vol. 1(1), pages 179-207, November.
    • Handle: RePEc:taf:recsxx:v:1:y:1998:i:1:p:179-207
    DOI: 10.1080/15140326.1998.12040522
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    Cited by:

    1. E. Sibel Yelten, 2003. "Real Effects of Movements in Nominal Exchange Rates: Application to the Asian Crisis," Journal of Applied Economics, Universidad del CEMA, vol. 6, pages 341-359, November.
    2. Clements, Kenneth W. & Fry, Renée, 2008. "Commodity currencies and currency commodities," Resources Policy, Elsevier, vol. 33(2), pages 55-73, June.
    3. Xu, Zhenhui, 2003. "Purchasing power parity, price indices, and exchange rate forcasts," Journal of International Money and Finance, Elsevier, vol. 22(1), pages 105-130, February.
    4. Mardi Dungey & Renee Fry-McKibbin & Verity Linehan, 2014. "Chinese resource demand and the natural resource supplier," Applied Economics, Taylor & Francis Journals, vol. 46(2), pages 167-178, January.
    5. Larry A. Sjaastad & Meher Manzur, 2003. "Import Protection, Capital Inflows, and Real Exchange Rate Dynamics," Journal of Applied Economics, Universidad del CEMA, vol. 6, pages 177-203, May.
    6. Mei-Hsiu Chen & Kenneth W Clements & Grace Gao, 2013. "Three Facts About World Metal Prices," Economics Discussion / Working Papers 13-01, The University of Western Australia, Department of Economics.
    7. Ms. Sibel Beadle, 2004. "Choosing the Correct Currency Anchor for a Small Economy: The Case of Nepal," IMF Working Papers 2004/142, International Monetary Fund.
    8. Yelten, E. Sibel, 2003. "Real Effects of Movements in Nominal Exchange Rates: Application to the Asian Crisis," Journal of Applied Economics, Universidad del CEMA, vol. 6(2), pages 1-19, November.

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