Collinearity and two-step estimation of sample selection models: Problems, origins, and remedies

Siu Fai Leung*, Shihti Yu

*Corresponding author for this work

Research output: Contribution to journalJournal Articlepeer-review

Abstract

This paper investigates the origins of the collinearity problems encountered in the two-step estimation method for sample selection models. The analysis reveals several critical misconceptions and deficiencies in the literature. Remedies to the collinearity problems are proposed and evaluated. Monte Carlo experiments as well as an empirical example based on Mroz's (1987) data are used to illustrate the practical relevance and importance of the analysis.

Original languageEnglish
Pages (from-to)173-199
Number of pages27
JournalComputational Economics
Volume15
Issue number3
DOIs
Publication statusPublished - 2000

Keywords

  • Collinearity problem
  • Heckman's two-step method
  • Monte Carlo experiment
  • Remedy
  • Sample selection
  • Wage equation

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