Journal of Economic Theory and Econometrics: Journal of the Korean Econometric Society
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Journal of Economic Theory and Econometrics
JETEM/계량경제학보/計量經濟學報/JKES
Journal of the Korean Econometric Society

Tests of the Null of Cointegration Using Integrated and Modified OLS Residuals

Vol.35, No.4, December , 55–86



  •   (University of Ulsan)

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Abstract  

This study develops a KPSS (Kwiatkowski et al., 1992)-type cointegration test utilizing residuals from integrated and modified ordinary least squares (IMOLS) estimation. The test statistic, denoted by $KPSS^{Fb}$ has a pivotal null limit distribution under fixed-$b$ assumption. The proposed test demonstrates reasonable performance in terms of size and power when the Andrews' AR(1) plug-in data-dependent ($DD$) bandwidth is employed and fixed-$b$ critical values are used. Additionally, two modified IMOLS residuals are proposed to obtain alternative data-dependent bandwidths. In the simulation experiment, these bandwidths deliver improved power properties for the proposed test.


Keywords
   Data-dependent bandwidth, cointegration, fixed-$b$, IMOLS, KPSS.

JEL classification codes
   C12, C22.
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