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Size and power properties of structural break unit root tests

Version 2 2024-06-18, 05:39
Version 1 2018-03-09, 16:13
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posted on 2024-06-18, 05:39 authored by PK Narayan, S Popp
In this paper, we compare the small sample size and power properties of a newly developed endogenous structural break unit root test of Narayan and Popp (NP, 2010) with existing two break unit root tests, namely the Lumsdaine and Papell (LP, 1997) and the Lee and Strazicich (LS, 2003) tests. In contrast to the widely used LP and LS tests, the NP test chooses the break date by maximizing the significance of the break dummy coefficient. Using Monte Carlo simulations, we show that the NP test has better size and high power, and identifies the structural breaks accurately. Power and size comparisons of the NP test with the LP and LS tests reveal that the NP test is significantly superior.

History

Pagination

1-31

Language

eng

Notes

School working paper (Deakin University. School of Accounting, Economics and Finance) ; 2011/07 In this paper, we compare the small sample size and power properties of a newly developed endogenous structural break unit root test of Narayan and Popp (NP, 2010) with existing two break unit root tests, namely the Lumsdaine and Papell (LP, 1997) and the Lee and Strazicich (LS, 2003) tests. In contrast to the widely used LP and LS tests, the NP test chooses the break date by maximizing the significance of the break dummy coefficient. Using Monte Carlo simulations, we show that the NP test has better size and high power, and identifies the structural breaks accurately. Power and size comparisons of the NP test with the LP and LS tests reveal that the NP test is significantly superior.

Publication classification

CN.1 Other journal article

Copyright notice

2011, The Authors

Publisher

Deakin University, School of Accounting, Economics and Finance

Place of publication

Geelong, Vic.

Series

School Working Paper - Financial Econometrics Series ; SWP 2011/07

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