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Unbiased Estimation of the Half-Life to PPP Convergence in Panel Data

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Author Info
Choi, Chi-Young
Mark, Nelson C.
Sul, Donggyu

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Abstract

Three potential sources of bias introduce complications for panel data estimation of the half-life of purchasing power parity deviations. They are bias induced by inappropriate cross-sectional aggregation of heterogeneous coefficients, small-sample estimation bias of dynamic lag coefficients, and bias induced by time aggregation of commodity prices. All of these biases have been addressed individually in the literature. In this paper, we address all three biases in arriving at our estimates. Using an annual panel data set of CPI-based real exchange rates for 21 OECD countries from 1973 to 1998, we obtain a point estimate of the unbiased half-life of 3.0 years with a 95% confidence interval of 2.3-4.2 years.

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File URL: http://dx.doi.org/10.1353/mcb.2006.0052
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Publisher Info
Article provided by Blackwell Publishing in its journal Journal of Money, Credit and Banking.

Volume (Year): 38 (2006)
Issue (Month): 4 (June)
Pages: 921-938
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Handle: RePEc:mcb:jmoncb:v:38:y:2006:i:4:p:921-938

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Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Fleissig, Adrian R. & Strauss, Jack, 2000. "Panel unit root tests of purchasing power parity for price indices," Journal of International Money and Finance, Elsevier, vol. 19(4), pages 489-506, August. [Downloadable!] (restricted)
  2. Jean Imbs & Haroon Mumtaz & Morton O. Ravn & Helene Rey, 2002. "PPP Strikes Back: Aggregation and the Real Exchange Rate," NBER Working Papers 9372, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  3. Shiu-Sheng Chen & Charles Engel, 2004. "Does "Aggregation Bias" Explain the PPP Puzzle?," NBER Working Papers 10304, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  4. Kenneth Rogoff, 1996. "The Purchasing Power Parity Puzzle," Journal of Economic Literature, American Economic Association, vol. 34(2), pages 647-668, June. [Downloadable!] (restricted)
  5. Papell, David H., 2006. "The Panel Purchasing Power Parity Puzzle," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 38(2), pages 447-467, March. [Downloadable!] (restricted)
  6. Flores, Renato & Jorion, Philippe & Preumont, Pierre-Yves & Szafarz, Ariane, 1999. "Multivariate unit root tests of the PPP hypothesis," Journal of Empirical Finance, Elsevier, vol. 6(4), pages 335-353, October. [Downloadable!] (restricted)
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  7. Choi, Chi-Young, 2004. "Searching for evidence of long-run PPP from a post-Bretton Woods panel: separating the wheat from the chaff," Journal of International Money and Finance, Elsevier, vol. 23(7-8), pages 1159-1186. [Downloadable!] (restricted)
  8. Nickell, Stephen J, 1981. "Biases in Dynamic Models with Fixed Effects," Econometrica, Econometric Society, vol. 49(6), pages 1417-26, November. [Downloadable!] (restricted)
  9. Murray, Christian J. & Papell, David H., 2002. "The purchasing power parity persistence paradigm," Journal of International Economics, Elsevier, vol. 56(1), pages 1-19, January. [Downloadable!] (restricted)
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  10. Frankel, Jeffrey A. & Rose, Andrew K., 1996. "A panel project on purchasing power parity: Mean reversion within and between countries," Journal of International Economics, Elsevier, vol. 40(1-2), pages 209-224, February. [Downloadable!] (restricted)
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  11. Marcellino, Massimiliano, 1999. "Some Consequences of Temporal Aggregation in Empirical Analysis," Journal of Business & Economic Statistics, American Statistical Association, vol. 17(1), pages 129-36, January.
  12. Chiu, Ru-Lin, 2002. "Testing the purchasing power parity in panel data," International Review of Economics & Finance, Elsevier, vol. 11(4), pages 349-362. [Downloadable!] (restricted)
  13. Papell, David H & Theodoridis, Hristos, 2001. "The Choice of Numeraire Currency in Panel Tests of Purchasing Power Parity," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 33(3), pages 790-803, August.
  14. Peter C.B. Phillips & Donggyu Sul, 2004. "Bias in Dynamic Panel Estimation with Fixed Effects, Incidental Trends and Cross Section Dependence," Yale School of Management Working Papers ysm428, Yale School of Management. [Downloadable!]
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  15. Papell, David H. & Theodoridis, Hristos, 1998. "Increasing evidence of purchasing power parity over the current float," Journal of International Money and Finance, Elsevier, vol. 17(1), pages 41-50, February. [Downloadable!] (restricted)
  16. Brewer, K. R. W., 1973. "Some consequences of temporal aggregation and systematic sampling for ARMA and ARMAX models," Journal of Econometrics, Elsevier, vol. 1(2), pages 133-154, June. [Downloadable!] (restricted)
  17. Rossana, Robert J & Seater, John J, 1992. "Aggregation, Unit Roots and the Time Series Structure on Manufacturing Real Wages," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 33(1), pages 159-79, February. [Downloadable!] (restricted)
  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. [Downloadable!] (restricted)
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(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Qian Chen & David E. Giles, 2007. "A Saddlepoint Approximation to the Distribution of the Half-Life Estimator in an Autoregressive Model: New Insights Into the PPP Puzzle," Econometrics Working Papers 0703, Department of Economics, University of Victoria. [Downloadable!]
  2. Georgios Chortareas & George Kapetanios, 2005. "How Puzzling is the PPP Puzzle? An Alternative Half-Life Measure of convergence to PPP," Money Macro and Finance (MMF) Research Group Conference 2005 36, Money Macro and Finance Research Group. [Downloadable!]
    Other versions:
  3. Christian Broda & David E. Weinstein, 2008. "Understanding International Price Differences Using Barcode Data," NBER Working Papers 14017, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  4. Sebastian Edwards, 2005. "Is the U.S. Current Account Deficit Sustainable? And If Not, How Costly is Adjustment Likely To Be?," NBER Working Papers 11541, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  5. Charles Engel & Nelson C. Mark & Kenneth D. West, 2007. "Exchange Rate Models Are Not as Bad as You Think," NBER Working Papers 13318, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  6. Mario J. Crucini & Mototsugu Shintani, 2002. "Persistence in Law-Of-One-Price Deviations: Evidence from Micro-Data," Working Papers 0616, Department of Economics, Vanderbilt University, revised Jul 2006. [Downloadable!]
    Other versions:
  7. Syed A. Basher & Josep Lluis Carrión-i-Silvestre, 2008. "Price level convergence, purchasing power parity and multiple structural breaks: An application to US cities," Working Papers XREAP2008-8, Xarxa de Referència en Economia Aplicada (XREAP), revised Jul 2008. [Downloadable!]
  8. Syed A. Basher & Josep Lluís Carrion-i-Silvestre, 2007. "Another Look at the Null of Stationary RealExchange Rates. Panel Data with Structural Breaks and Cross-section Dependence," IREA Working Papers 200710, University of Barcelona, Research Institute of Applied Economics, revised May 2007. [Downloadable!]
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