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Department of Economics, Lund University Working Papers, Department of Economics, Lund University

No 2005:42:
Panel Cointegration Tests with Deterministic Trends and Structural Breaks

Joakim Westerlund () and David Edgerton ()

Abstract: 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.

Keywords: Panel Cointegration; Residual-Based Cointegration Test; Structural Break; Deterministic Trend; LM Principle; (follow links to similar papers)

JEL-Codes: C12; C32; C33; (follow links to similar papers)

34 pages, October 11, 2005

Corresponding author: Joakim Westerlund

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