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This paper demonstrates that unit root tests can suffer from inflated Type I error rates when data are cointegrated. Results from Monte Carlo simulations show that three commonly used unit root tests - the ADF, Phillips-Perron, and DF-GLS tests - frequently overreject the true null of a unit...
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In this paper, tests for fractional cointegration that allow for structural breaks in the long-run equilibrium are … proposed. Traditional cointegration tests cannot handle shifts in fractional cointegration relationships, a limitation … addressed here by allowing for a time-dependent memory parameter for the cointegration error. The tests are implemented by …
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In this paper, we develop new threshold cointegration tests with SETAR and MTAR adjustment allowing for the presence of … breakpoint and test the null hypothesis of no cointegration. Thereby, we extend the well-known residual-based cointegration test … Carlo experiments. We find a substantial decrease of power of the conventional threshold cointegration tests caused by a …
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