Unit Root Testing

Juergen Wolters and Uwe Hassler

Chapter 4 in Modern Econometric Analysis, 2006, pp 41-56 from Springer

Abstract: Abstract The occurrence of unit roots in economic time series has far reaching consequences for univariate as well as multivariate econometric modelling. Therefore, unit root tests are nowadays the starting point of most empirical time series studies. The oldest and most widely used test is due to Dickey and Fuller (1979). Reviewing this test and variants thereof we focus on the importance of modelling the deterministic component. In particular, we survey the growing literature on tests accounting for structural shifts. Finally, further applied aspects are addressed, for instance, how to get the size correct and obtain good power at the same time.

Keywords: Unit Root; Structural Break; Unit Root Test; Deterministic Component; Economic Time Series (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1007/3-540-32693-6_4

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