Spurious regression under broken trend stationarity

Antonio Noriega () and Daniel Ventosa-Santaulària

No EM200501, Department of Economics and Finance Working Papers from Universidad de Guanajuato, Department of Economics and Finance

Abstract: We study the phenomenon of spurious regression between two random variables, when the generating mechanism of individual series is assumed to follow a stationary process around a trend with (possibly) multiple breaks in the level and slope of trend. We develop the relevant asymptotic theory and show that the phenomenon of spurious regression occurs independently of the structure assumed for the errors. In contrast to previous findings, the presence of a spurious relationship will be less severe when breaks are present in the generating mechanism of individual series. This is true whether the regression model includes a linear trend or not. Simulations confirm our asymptotic results, and reveal that in finite samples, the phenomenon of spurious regression is sensitive to the presence of a linear trend in the regression model, and to the relative location of breaks within the sample.

Keywords: Stationarity; Structural breaks; Spurious regression (search for similar items in EconPapers)
JEL-codes: C22 (search for similar items in EconPapers)
Pages: 19 pages
Date: 2005-01
New Economics Papers: this item is included in nep-ecm and nep-ets
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Citations: View citations in EconPapers (9)

Published in Journal of Time Series Analysis (2006)

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Related works:
Journal Article: Spurious Regression Under Broken‐Trend Stationarity (2006)
Working Paper: Spurious regression under broken trend stationarity (2005)
Working Paper: Spurious regression under broken trend stationarity (2005)
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