Artikel

A GMM-based test for normal disturbances of the Heckman sample selection model

The Heckman sample selection model relies on the assumption of normal and homoskedastic disturbances. However, before considering more general, alternative semiparametric models that do not need the normality assumption, it seems useful to test this assumption. Following Meijer and Wansbeek (2007), the present contribution derives a GMM-based pseudo-score LM test on whether the third and fourth moments of the disturbances of the outcome equation of the Heckman model conform to those implied by the truncated normal distribution. The test is easy to calculate and in Monte Carlo simulations it shows good performance for sample sizes of 1000 or larger.

Sprache
Englisch

Erschienen in
Journal: Econometrics ; ISSN: 2225-1146 ; Volume: 2 ; Year: 2014 ; Issue: 4 ; Pages: 151-168 ; Basel: MDPI

Klassifikation
Wirtschaft
Single Equation Models; Single Variables: Panel Data Models; Spatio-temporal Models
Single Equation Models; Single Variables: Cross-Sectional Models; Spatial Models; Treatment Effect Models; Quantile Regressions
Thema
sample selection model
GMM
normality
pseudo-score LM test

Ereignis
Geistige Schöpfung
(wer)
Pfaffermayr, Michael
Ereignis
Veröffentlichung
(wer)
MDPI
(wo)
Basel
(wann)
2014

DOI
doi:10.3390/econometrics2040151
Handle
Letzte Aktualisierung
10.03.2025, 11:43 MEZ

Datenpartner

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Objekttyp

  • Artikel

Beteiligte

  • Pfaffermayr, Michael
  • MDPI

Entstanden

  • 2014

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