On LM type tests for seasonal unit roots in quarterly data
AbstractIn this paper the application of the score principle to test for unit roots in seasonal processes is analysed. In particular, tests based on the procedure proposed by Hylleberg "et al." (1990, Journal of Econometrics, 44 , 215-38) (HEGY) are introduced and the respective limit distributions derived in a local-to-unity context. It is shown that these statistics converge to distributions already tabulated in the literature. A Monte Carlo investigation contrasting the conventional HEGY procedure with the new Lagrange multiplier HEGY type tests reveals the latter to have a better performance. Furthermore, the limiting powers of the test statistic are also computed and compared. Copyright Royal Economic Society 2002
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Bibliographic InfoArticle provided by Royal Economic Society in its journal The Econometrics Journal.
Volume (Year): 5 (2002)
Issue (Month): 1 (June)
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- Luis C. Nunes & Paulo M. M. Rodrigues, 2011.
"On LM‐type tests for seasonal unit roots in the presence of a break in trend,"
Journal of Time Series Analysis,
Wiley Blackwell, vol. 32(2), pages 108-134, 03.
- Luís Catela Nunes & Paulo M.M. Rodrigues, 2009. "On LM-Type Tests for Seasonal Unit Roots in the Presence of a Break in Trend," Working Papers w200920, Banco de Portugal, Economics and Research Department.
- Hassler, Uwe & Rodrigues, Paulo M. M., 2002.
"Seasonal Unit Root Tests under Structural Breaks,"
Darmstadt Discussion Papers in Economics
37696, Darmstadt Technical University, Department of Business Administration, Economics and Law, Institute of Economics (VWL).
- Rodrigues, Paulo M. M. & Taylor, A. M. Robert, 2004. "Alternative estimators and unit root tests for seasonal autoregressive processes," Journal of Econometrics, Elsevier, vol. 120(1), pages 35-73, May.
- Gabriel Pons, 2006. "Testing Monthly Seasonal Unit Roots With Monthly and Quarterly Information," Journal of Time Series Analysis, Wiley Blackwell, vol. 27(2), pages 191-209, 03.
- Taylor, A. M. Robert, 2005. "Variance ratio tests of the seasonal unit root hypothesis," Journal of Econometrics, Elsevier, vol. 124(1), pages 33-54, January.
- Paulo M.M. Rodrigues & A.M. Robert Taylor, .
"Efficient Tests of the Seasonal Unit Root Hypothesis,"
06/12, University of Nottingham, School of Economics.
- Rodrigues, Paulo M.M. & Taylor, A.M. Robert, 2007. "Efficient tests of the seasonal unit root hypothesis," Journal of Econometrics, Elsevier, vol. 141(2), pages 548-573, December.
- Paulo M.M. Rodrigues & A.M. Robert Taylor, 2004. "Efficient Tests of the Seasonal Unit Root Hypothesis," Economics Working Papers ECO2004/29, European University Institute.
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