Nonlinearity and Smooth Breaks in Unit Root Testing

Omay, Tolga and Yildirim, Dilem (2013): Nonlinearity and Smooth Breaks in Unit Root Testing. Published in: Econometrics Letters , Vol. 1, No. 1 (1 June 2014): pp. 2-9.

Abstract

We develop unit root tests that allow under the alternative hypothesis for a smooth transition between deterministic linear trends, around which stationary asymmetric adjustment may occur by employing exponential smooth transition auto-regressive (ESTAR) models The small sample properties of the newly developed test are briefly investigated and an application for investigating the PPP hypothesis for Argentina is provided.

• Item Type: MPRA Paper
• Language: English
• Keywords: Smooth Break; Nonlinear Unit Root Test; PPP
• Subjects: C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General > C12 - Hypothesis Testing: General; C - Mathematical and Quantitative Methods > C2 - Single Equation Models ; Single Variables > C22 - Time-Series Models ; Dynamic Quantile Regressions ; Dynamic Treatment Effect Models ; Diffusion Processes; F - International Economics > F4 - Macroeconomic Aspects of International Trade and Finance

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