Nonparametric rank tests for non-stationary panels

Pedroni, Peter L.; Vogelsang, Timothy J.; Wagner, MartinORCID: and Westerlund, Joakim (2015) Nonparametric rank tests for non-stationary panels. Journal of Econometrics, 185 (2), pp. 378-391. DOI: 10.1016/j.jeconom.2014.08.013

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We develop a set of nonparametric rank tests for non-stationary panels based on multivariate variance ratios which use untruncated kernels. As such, the tests do not require the choice of tuning parameters associated with bandwidth or lag length and also do not require choices with respect to numbers of common factors. The tests allow for unrestricted cross-sectional dependence and dynamic heterogeneity among the units of the panel, provided simply that a joint functional central limit theorem holds for the panel of differenced series. We provide a discussion of the relationships between our setting and the settings for which first- and second generation panel unit root tests are designed. In Monte Carlo simulations we illustrate the small-sample performance of our tests when they are used as panel unit root tests under the more restrictive DGPs for which panel unit root tests are typically designed, and for more general DGPs we also compare the small-sample performance of our nonparametric tests to parametric rank tests. Finally, we provide an empirical illustration by testing for income convergence among countries. (author's abstract)

Item Type: Article in Academic Journal
Keywords: Cointegration; Cross-sectional dependence; Nonparametric rank tests; Time series panel; Unit roots
Classification Codes (e.g. JEL): C12; C22; C23
Date Deposited: 19 Feb 2015 12:43
Last Modified: 20 Nov 2023 09:28
DOI: 10.1016/j.jeconom.2014.08.013
ISSN: 03044076

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