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On the small sample properties of weak exogeneity tests in cointegrated VAR models

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  • Brüggemann, Ralf

Abstract

We investigate the small sample properties of two types of weak exogeneity tests in cointegrated VAR models that are frequently used in applied work. The first one is the standard Likelihood Ratio (LR) test in the Johansen framework. The second test is based on mapping the cointegrated VAR model into VECM representation and then reducing the model using some model selection procedure before testing the significance of the alpha parameters. Results from Monte Carlo experiments indicate severe size distortions in both test types in small samples. We suggest a bootstrap version of the LR test, which can be used for size correction.

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  • Brüggemann, Ralf, 2002. "On the small sample properties of weak exogeneity tests in cointegrated VAR models," SFB 373 Discussion Papers 2002,2, Humboldt University of Berlin, Interdisciplinary Research Project 373: Quantification and Simulation of Economic Processes.
    • Handle: RePEc:zbw:sfb373:20022
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    Cited by:

    1. Ghassan, Hassan B., 2011. "Public and Private Investment in Saudi Economy: Evidence from Weak Exogeneity and Bound Cointegration Tests," MPRA Paper 56537, University Library of Munich, Germany.

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    More about this item

    Keywords

    Cointegration; weak exogeneity; bootstrap test; Subset VECM;
    All these keywords.

    JEL classification:

    • C32 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes; State Space Models
    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation

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