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A new unit root test against ESTAR based on a class of modified statistics

Robinson Kruse

Hannover Economic Papers (HEP) from Leibniz Universität Hannover, Wirtschaftswissenschaftliche Fakultät

Abstract: This paper proposes a new unit root test against a non-linear exponential smooth transition autoregressive (ESTAR) model. The new test is build upon the non-standard testing approach of Abadir and Distaso (2007) who introduce a class of modified statistics for testing joint hypotheses when one of the alternatives is one-sided. In a Monte Carlo study the popular Dickey-Fuller type test proposed by Kapetanios et al. (2003) is compared with the new test. The results suggest that the new test is generally superior in terms of power. An application to a real effective exchange rate underlines its usefulness.

Keywords: Unit root test; Nonlinearities; Smooth transition (search for similar items in EconPapers)
JEL-codes: C12 C22 F31 (search for similar items in EconPapers)
Pages: 14 pages
Date: 2008-04
New Economics Papers: this item is included in nep-ecm, nep-ets, nep-ifn and nep-ore
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Journal Article: A new unit root test against ESTAR based on a class of modified statistics (2011) Downloads
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