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Efficient tests for autoregressive unit roots in panel data

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  • David Bowman
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    Abstract

    In this paper the class of admissable tests for unit roots in panel data sets of autoregressive, Gaussian time series will be partially characterized. Using this characterization, several recently suggested tests are shown to be inadmissable. Since the sufficient statistic for this testing problem is multidimensional, there is no uniformly most powerful test; however, in light of the inadmissability result, a new test is proposed that appears to do well relative to existing tests. The test is parameterized in a way that allows the choice of different directional deviations from the null hypothesis over which power is to be maximized, giving added flexibility to researchers.

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    File URL: http://www.federalreserve.gov/pubs/ifdp/1999/646/default.htm
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    File URL: http://www.federalreserve.gov/pubs/ifdp/1999/646/ifdp646.ps
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    Bibliographic Info

    Paper provided by Board of Governors of the Federal Reserve System (U.S.) in its series International Finance Discussion Papers with number 646.

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    Date of creation: 1999
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    Handle: RePEc:fip:fedgif:646

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    Related research

    Keywords: Econometric models ; Time-series analysis;

    This paper has been announced in the following NEP Reports:

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    Cited by:
    1. Claude Lopez, 2003. "An Improved Panel Unit Root Test Using GLS-Detrending," Econometrics 0310003, EconWPA.
    2. Papell, David H., 2002. "The great appreciation, the great depreciation, and the purchasing power parity hypothesis," Journal of International Economics, Elsevier, vol. 57(1), pages 51-82, June.
    3. Chen, Natalie, 2004. "The behaviour of relative prices in the European Union: A sectoral analysis," European Economic Review, Elsevier, vol. 48(6), pages 1257-1286, December.
    4. Claude Lopez, 2005. "A Panel Unit Root Test with Good Power in Small Samples," University of Cincinnati, Economics Working Papers Series 2005-01, University of Cincinnati, Department of Economics, revised 2007.
    5. Im, Kyung So & Pesaran, M. Hashem & Shin, Yongcheol, 2003. "Testing for unit roots in heterogeneous panels," Journal of Econometrics, Elsevier, vol. 115(1), pages 53-74, July.
    6. Chaudhuri Kausik & Sheen Jeffrey R, 2007. "To Pool or to Aggregate? Tests with a Dynamic Panel Macroeconometric Model of Australian State Labor Markets," The B.E. Journal of Macroeconomics, De Gruyter, vol. 7(1), pages 1-37, January.
    7. 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.
    8. M. Hashem Pesaran, 2007. "A simple panel unit root test in the presence of cross-section dependence," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 22(2), pages 265-312.
    9. Alba, Joseph D. & Park, Donghyun, 2003. "Purchasing Power Parity in Developing Countries: Multi-Period Evidence Under the Current Float," World Development, Elsevier, vol. 31(12), pages 2049-2060, December.

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