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Testing non-nested semiparametric models: an application to Engel curves specification

  • Miguel A. Delgado

    (Departamento de Estadistica y Econometria, Universidad Carlos III de Madrid, Madrid, Spain)

  • Juan Mora

    (Departamento de Fundamentos del Análisis Económico, Universidad de Alicante, Alicante, Spain)

This paper proposes a test statistic for discriminating between two partly non-linear regression models whose parametric components are non-nested. The statistic has the form of a J-test based on a parameter which artificially nests the null and alternative hypotheses. We study in detail the realistic case where all regressors in the non-linear part are discrete and then no smoothing is required on estimating the non-parametric components. We also consider the general case where continuous and discrete regressors are present. The performance of the test in finite samples is discussed in the context of some Monte Carlo experiments. The test is well motivated for specification testing of Engel curves. We provide an application using data from the 1980 Spanish Expenditure Survey. © 1998 John Wiley & Sons, Ltd.

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Article provided by John Wiley & Sons, Ltd. in its journal Journal of Applied Econometrics.

Volume (Year): 13 (1998)
Issue (Month): 2 ()
Pages: 145-162

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Handle: RePEc:jae:japmet:v:13:y:1998:i:2:p:145-162
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