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Sample Selection Bias as a Specification Error

1979/01/01 by James J. Heckman · 29,055 citations
Chemistry · Computer Science · Mathematics · #Advanced Computational Techniques in Science and Engineering #Artificial intelligence #Chemistry #Computer science #Econometrics #Economics #Mathematics #Sample (material) #Selection (genetic algorithm) #Selection bias #Statistics

paper · doi:10.2307/1912352

published in Econometrica 47(1), 153 (Wiley)

openalex publication_date 1979/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Sample selection bias as a specification error This paper discusses the bias that results from using non-randomly selected samples to estimate behavioral relationships as an ordinary specification error or «omitted variables» bias. A simple consistent two stage estimator is considered that enables analysts to utilize simple regression methods to estimate behavioral functions by least squares methods. The asymptotic distribution of the estimator is derived.

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