This paper proposes Lagrange multiplier (LM) based tests for the null hypothesis of no cointegration in panel data. The tests are general enough to allow for heteroskedastic and serially correlated errors, individual specific time trends, and a single structural break in both the intercept and slope of each regression, which may be located different dates for different individuals. The limiting distributions of the test statistics are derived, and are found to be standard normal and free of nuisance parameters under the null. In particular, the distributions are found to be invariant not only with respect to trend and structural break, but also with respect to the presence of stochastic regressors. A small Monte Carlo study is also conducted to investigate the small-sample properties of the tests. The results reveal that the tests have small size distortions and good power even in very small samples.
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Paper provided by Lund University, Department of Economics in its series Working Papers with number
2005:42.
Length: 34 pages Date of creation: 11 Oct 2005 Date of revision: Handle: RePEc:hhs:lunewp:2005_042
Note: Corresponding author: Joakim Westerlund Contact details of provider: Postal: Department of Economics, School of Economics and Management, Lund University, Box 7082, S-220 07 Lund,Sweden Phone: +46 +46 222 0000 Fax: +46 +46 2224613 Web page: http://www.nek.lu.se/ More information through EDIRC
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