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Potential Pitfalls for the Purchasing-Power-Parity Puzzle? Sampling and Specification Biases in Mean-Reversion Tests of the Law of One Price

  • Taylor, Alan M

The PPP puzzle is based on empirical evidence that international price differences for individual goods (LOOP) or baskets of goods (PPP) appear highly persistent or even non-stationary. The present consensus is these price differences have a half-life that is of the order of five years at best, and infinity at worst. This seems unreasonable in a world where transportation and transaction costs appear so low as to encourage arbitrage and the convergence of price gaps over much shorter horizons, typically days or weeks. However, current empirics rely on a particular choice of methodology, involving (i) relatively low-frequency monthly, quarterly, or annual data, and (ii) a linear model specification. In fact, these methodological choices are not innocent, and they can be shown to bias analysis to-wards findings of slow convergence and a random walk. Intuitively, if we suspect that the actual adjustment horizon is of the order of days then monthly and annual data cannot be expected to reveal it. If we suspect arbitrage costs are high enough to produce a substantial band of inaction' then a linear model will fail to support convergence if the process spends considerable time random-walking in that band. Thus, when testing for PPP or LOOP, model specification and data sampling should not proceed without consideration of the actual institutional context and logistical framework of markets.

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Article provided by Econometric Society in its journal Econometrica.

Volume (Year): 69 (2001)
Issue (Month): 2 (March)
Pages: 473-98

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Handle: RePEc:ecm:emetrp:v:69:y:2001:i:2:p:473-98
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  1. Froot, Kenneth A. & Rogoff, Kenneth, 1995. "Perspectives on PPP and long-run real exchange rates," Handbook of International Economics, in: G. M. Grossman & K. Rogoff (ed.), Handbook of International Economics, edition 1, volume 3, chapter 32, pages 1647-1688 Elsevier.
  2. Schwert, G. William, 1987. "Effects of model specification on tests for unit roots in macroeconomic data," Journal of Monetary Economics, Elsevier, vol. 20(1), pages 73-103, July.
  3. Glen, Jack D., 1992. "Real exchange rates in the short, medium, and long run," Journal of International Economics, Elsevier, vol. 33(1-2), pages 147-166, August.
  4. James M. Poterba & Lawrence H. Summers, 1987. "Mean Reversion in Stock Prices: Evidence and Implications," NBER Working Papers 2343, National Bureau of Economic Research, Inc.
  5. Jeffrey A. Frankel & Andrew K. Rose, 1995. "A Panel Project on Purchasing Power Parity: Mean Reversion Within and Between Countries," NBER Working Papers 5006, National Bureau of Economic Research, Inc.
  6. Shiller, Robert J. & Perron, Pierre, 1985. "Testing the random walk hypothesis : Power versus frequency of observation," Economics Letters, Elsevier, vol. 18(4), pages 381-386.
  7. Cochrane, John H, 1988. "How Big Is the Random Walk in GNP?," Journal of Political Economy, University of Chicago Press, vol. 96(5), pages 893-920, October.
  8. Baillie, R.T. & Bollerslev, T., 1989. "Intra Day And Inter Market Volatility In Foreign Exchange Rates," Papers 8811, Michigan State - Econometrics and Economic Theory.
  9. Jorion, Philippe & Sweeney, Richard J., 1996. "Mean reversion in real exchange rates: evidence and implications for forecasting," Journal of International Money and Finance, Elsevier, vol. 15(4), pages 535-550, August.
  10. Bacchetta, Philippe & Gerlach, Stefan, 1997. "Consumption and Credit Constraints: International evidence," CEPR Discussion Papers 1727, C.E.P.R. Discussion Papers.
  11. Alan M. Taylor, 1996. "International Capital Mobility in History: Purchasing-Power Parity in the Long Run," NBER Working Papers 5742, National Bureau of Economic Research, Inc.
  12. Campbell, John Y & Mankiw, N Gregory, 1990. "Permanent Income, Current Income, and Consumption," Journal of Business & Economic Statistics, American Statistical Association, vol. 8(3), pages 265-79, July.
  13. Christiano, Lawrence J & Eichenbaum, Martin & Marshall, David, 1991. "The Permanent Income Hypothesis Revisited," Econometrica, Econometric Society, vol. 59(2), pages 397-423, March.
  14. Charles Engel, 1998. "Long-Run PPP May Not Hold After All," Working Papers 0050, University of Washington, Department of Economics.
  15. Francisco Maeso-Fernandez, 1998. "Econometric methods and purchasing power parity: short- and long-run PPP," Applied Economics, Taylor & Francis Journals, vol. 30(11), pages 1443-1457.
  16. Obstfeld, Maurice & Taylor, Alan M., 1997. "Nonlinear Aspects of Goods-Market Arbitrage and Adjustment: Heckscher's Commodity Points Revisited," Journal of the Japanese and International Economies, Elsevier, vol. 11(4), pages 441-479, December.
  17. Papell, David H., 1997. "Searching for stationarity: Purchasing power parity under the current float," Journal of International Economics, Elsevier, vol. 43(3-4), pages 313-332, November.
  18. Lothian, James R & Taylor, Mark P, 1996. "Real Exchange Rate Behavior: The Recent Float from the Perspective of the Past Two Centuries," Journal of Political Economy, University of Chicago Press, vol. 104(3), pages 488-509, June.
  19. Nathan S. Balke & Thomas B. Fomby, 1992. "Threshold cointegration," Research Paper 9209, Federal Reserve Bank of Dallas.
    • Balke, Nathan S & Fomby, Thomas B, 1997. "Threshold Cointegration," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 38(3), pages 627-45, August.
  20. Kenneth Rogoff, 1996. "The Purchasing Power Parity Puzzle," Journal of Economic Literature, American Economic Association, vol. 34(2), pages 647-668, June.
  21. Louis Dorrance Johnston & Menzie David Chinn, 1997. "Real Exchange Rate Levels, Productivity and Demand Shocks; Evidence From a Panel of 14 Countries," IMF Working Papers 97/66, International Monetary Fund.
  22. Lothian, James R., 1997. "Multi-country evidence on the behavior of purchasing power parity under the current float," Journal of International Money and Finance, Elsevier, vol. 16(1), pages 19-35, February.
  23. Oh, Keun-Yeob, 1996. "Purchasing power parity and unit root tests using panel data," Journal of International Money and Finance, Elsevier, vol. 15(3), pages 405-418, June.
  24. O'Connell, Paul G. J., 1998. "The overvaluation of purchasing power parity," Journal of International Economics, Elsevier, vol. 44(1), pages 1-19, February.
  25. Taylor, Mark P & Peel, David A & Sarno, Lucio, 2001. "Nonlinear Mean-Reversion in Real Exchange Rates: Toward a Solution to the Purchasing Power Parity Puzzles," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 42(4), pages 1015-42, November.
  26. Berloffa, Gabriella, 1997. "Temporary and Permanent Changes in Consumption Growth," Economic Journal, Royal Economic Society, vol. 107(441), pages 345-58, March.
  27. Blundell-Wignall, Adrian & Browne, Frank & Tarditi, Alison, 1995. "Financial Liberalization and the Permanent Income Hypothesis," The Manchester School of Economic & Social Studies, University of Manchester, vol. 63(2), pages 125-44, June.
  28. Canzoneri, Matthew B & Cumby, Robert & Diba, Behzad, 1996. "Relative Labour Productivity and the Real Exchange Rate in the Long Run: Evidence for a Panel of OECD Countries," CEPR Discussion Papers 1464, C.E.P.R. Discussion Papers.
  29. Lucio Sarno & Mark P. Taylor, . "Real Interest Rates, Liquidity Constraints and Financial Deregulation: Private Consumption Behaviour in the UK," Economics and Finance Discussion Papers 97-12, Economics and Finance Section, School of Social Sciences, Brunel University.
  30. Apte, Prakash & Kane, Marian & Sercu, Piet, 1994. "Relative PPP in the medium run," Journal of International Money and Finance, Elsevier, vol. 13(5), pages 602-622, October.
  31. Michael, Panos & Nobay, A Robert & Peel, David A, 1997. "Transactions Costs and Nonlinear Adjustment in Real Exchange Rates: An Empirical Investigation," Journal of Political Economy, University of Chicago Press, vol. 105(4), pages 862-79, August.
  32. Dumas, Bernard, 1992. "Dynamic Equilibrium and the Real Exchange Rate in a Spatially Separated World," Review of Financial Studies, Society for Financial Studies, vol. 5(2), pages 153-80.
  33. Ermini, Luigi, 1993. "Effects of Transitory Consumption and Temporal Aggregation on the Permanent Income Hypothesis," The Review of Economics and Statistics, MIT Press, vol. 75(4), pages 736-40, November.
  34. Sercu, Piet & Uppal, Raman & Van Hulle, Cynthia, 1995. " The Exchange Rate in the Presence of Transaction Costs: Implications for Tests of Purchasing Power Parity," Journal of Finance, American Finance Association, vol. 50(4), pages 1309-19, September.
  35. Mark P. Taylor, 1995. "The Economics of Exchange Rates," Journal of Economic Literature, American Economic Association, vol. 33(1), pages 13-47, March.
  36. Courtland L. Washburn & Clark S. Binkley, 1990. "On the Use of Period-Average Stumpage Prices to Estimate Forest Asset Pricing Models," Land Economics, University of Wisconsin Press, vol. 66(4), pages 379-393.
  37. Robert E. Hall, 1981. "Intertemporal Substitution in Consumption," NBER Working Papers 0720, National Bureau of Economic Research, Inc.
  38. Bayoumi, Tamim A, 1993. "Financial Deregulation and Consumption in the United Kingdom," The Review of Economics and Statistics, MIT Press, vol. 75(3), pages 536-39, August.
  39. Robert E. Hall, 1987. "Consumption," NBER Working Papers 2265, National Bureau of Economic Research, Inc.
  40. Lothian, James R. & Taylor, Mark P., 1997. "Real exchange rate behavior," Journal of International Money and Finance, Elsevier, vol. 16(6), pages 945-954, December.
  41. Ramey, Valerie A, 1989. "Inventories as Factors of Production and Economic Fluctuations," American Economic Review, American Economic Association, vol. 79(3), pages 338-54, June.
  42. Ng, Serena, 1995. "Testing for unit roots in flow data sampled at different frequencies," Economics Letters, Elsevier, vol. 47(3-4), pages 237-242, March.
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