Testing for seasonal unit roots in heterogeneous panels in the presence of cross section dependence

This paper presents two alternative methods for modifying the HEGY-IPS test in the presence of cross-sectional dependency. In general, the bootstrap method (BHEGY-IPS) has greater power than the method suggested by Pesaran [Pesaran, M.H. (2007). A simple panel unit root test in the presence of cross...

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Autores:
Tipo de recurso:
Fecha de publicación:
2007
Institución:
Universidad del Rosario
Repositorio:
Repositorio EdocUR - U. Rosario
Idioma:
eng
OAI Identifier:
oai:repository.urosario.edu.co:10336/23900
Acceso en línea:
https://doi.org/10.1016/j.econlet.2007.03.002
https://repository.urosario.edu.co/handle/10336/23900
Palabra clave:
Cross-sectional dependence
Heterogeneous dynamic panels
Monte Carlo
Seasonal unit roots
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Summary:This paper presents two alternative methods for modifying the HEGY-IPS test in the presence of cross-sectional dependency. In general, the bootstrap method (BHEGY-IPS) has greater power than the method suggested by Pesaran [Pesaran, M.H. (2007). A simple panel unit root test in the presence of cross section dependence. Journal of Applied Econometrics, forthcoming.] (CHEGY-IPS), although for large T and high degree of cross-sectional dependency the CHEGY-IPS test dominates the BHEGY-IPS test. © 2007 Elsevier B.V. All rights reserved.