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Testing Parameter Constancy and super Exogeneity in Econometric Equations

Author

Listed:
  • Jansen, Eilev S.
  • Teräsvirta, Timo

    (Dept. of Economic Statistics, Stockholm School of Economics)

Abstract

The paper is concerned with testing super exogeneity in a single equation that can either be linear or partially nonlinear. A joint test for testing both weak exogeneity and a form of invariance, which together amount to super exogeneity, is presented and its properties discussed. The considerations also include testing parameter constancy and modelling parameter nonconstancy prior to testing super exogeneity. The practical application of the tests is demonstrated by an example in which testing super exogeneity in a previously published consumption function for Norway is considered. The results are compared with the previous conclusions and found not to disagree with them.

Suggested Citation

  • Jansen, Eilev S. & Teräsvirta, Timo, 1995. "Testing Parameter Constancy and super Exogeneity in Econometric Equations," SSE/EFI Working Paper Series in Economics and Finance 53, Stockholm School of Economics.
    • Handle: RePEc:hhs:hastef:0053
    as

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    Keywords

    Changing seasonality; invariance; linearity testing; model specification; parameter stability; weak exogeneity;
    All these keywords.

    JEL classification:

    • C52 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Evaluation, Validation, and Selection

    Statistics

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