Abstract
All tests involving both structural breaks and cointegration are parametric. As a complement to the classical hypothesis testing for empirical researchers, we suggest the use of a one-step model selection approach to simultaneously specifying lag orders, cointegration ranks, and structural breaks. The performances of the four popular information criteria along with a LM-based parametric test are shown in extensive simulation studies. Applying the approach to study linkages in the Eurocurrency interest rates market, we find that six major short-term rates were subject to a structural break and the cointegration rank also changed following the break.
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