Time-specific disturbances and cross-sectional dependency in a small-sample heterogeneous panel data unit root test
In their seminal work, Im et al. (1997, 2003) suggested that time series for several cross-sectional units could be used to increase the power of the Dickey--Fuller unit root test. They argued that when cross-sectional correlation is a problem that can be modelled by a time-specific factor, demeaning across the cross-sectional units can solve the problem. In this study, this proposition is proven valid, but it is also shown that previously supplied standardizing moments are inappropriate when the number of cross-sections are small, causing size to differ from the significance level. To correct this size distortion, the current paper supplies response surface parameters that can be used to obtain moments that are valid when a time-specific factor suffices for modelling cross-sectional correlation in the heterogeneous panel data unit root framework. The correct size of the panel data unit root test comes at the cost of a somewhat lower power against a stationary alternative.
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Volume (Year): 38 (2006)
Issue (Month): 11 ()
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- Samarjit Das & Joerg Breitung, 2004.
"Panel Unit Root Tests under Cross- sectional Dependence,"
Econometric Society 2004 North American Summer Meetings
55, Econometric Society.
- Jörg Breitung & Samarjit Das, 2005. "Panel unit root tests under cross-sectional dependence," Statistica Neerlandica, Netherlands Society for Statistics and Operations Research, vol. 59(4), pages 414-433.
- Chang, Yoosoon, 2002.
"Bootstrap Unit Root Tests in Panels with Cross-Sectional Dependency,"
2000-01, Rice University, Department of Economics.
- Chang, Yoosoon, 2004. "Bootstrap unit root tests in panels with cross-sectional dependency," Journal of Econometrics, Elsevier, vol. 120(2), pages 263-293, June.
- Yoosoon Chang, 2000. "Bootstrap Unit Root Tests in Panels with Cross-Sectional Dependency," Cowles Foundation Discussion Papers 1251, Cowles Foundation for Research in Economics, Yale University.
- Yoosoon Chang, 2000. "Bootstrap Unit Root Tests in Panels with Cross-Sectional Dependency," Econometric Society World Congress 2000 Contributed Papers 1585, Econometric Society.
- Quah, D., 1993.
"Exploiting Cross Section Variation for Unit Root Inference in Dynamic Data,"
549, Stockholm - International Economic Studies.
- Quah, Danny, 1994. "Exploiting cross-section variation for unit root inference in dynamic data," Economics Letters, Elsevier, vol. 44(1-2), pages 9-19.
- Danny Quah, 1993. "Exploiting Cross Section Variation for Unit Root Inference in Dynamic Data," FMG Discussion Papers dp171, Financial Markets Group.
- Jönsson, Kristian, 2004. "Testing for Stationarity in Panel Data Models when Disturbances are Cross-Sectionally Correlated," Working Papers 2004:17, Lund University, Department of Economics, revised 26 Nov 2004.
- Josep LluIs Carrion-I-Silvestre & Tomas Del Barrio & Enrique Lopez-Bazo, 2004.
"Evidence on the purchasing power parity in a panel of cities,"
Taylor & Francis Journals, vol. 36(9), pages 961-966.
- Tomas del Barrio & Josep Ll Carrion & Enrique Lopez-Bazo, 2003. "Evidence on the Purchasing Power Parity in Panel of Cities," ERSA conference papers ersa03p273, European Regional Science Association.
- Strauss, Jack & Yigit, Taner, 2003.
"Shortfalls of panel unit root testing,"
Elsevier, vol. 81(3), pages 309-313, December.
- Mark Holmes, 2002. "Panel data evidence on inflation convergence in the European Union," Applied Economics Letters, Taylor & Francis Journals, vol. 9(3), pages 155-158.
- Levin, Andrew & Lin, Chien-Fu & James Chu, Chia-Shang, 2002.
"Unit root tests in panel data: asymptotic and finite-sample properties,"
Journal of Econometrics,
Elsevier, vol. 108(1), pages 1-24, May.
- Tom Doan, "undated". "LEVINLIN: RATS procedure to perform Levin-Lin-Chu test for unit roots in panel data," Statistical Software Components RTS00242, Boston College Department of Economics.
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