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Nonparametric bounds on the returns to language skills
González, Libertad
Universitat Pompeu Fabra. Departament d'Economia i Empresa
This paper applies the theoretical literature on nonparametric bounds ontreatment effects to the estimation of how limited English proficiency (LEP)affects wages and employment opportunities for Hispanic workers in theUnited States. I analyze the identifying power of several weak assumptionson treatment response and selection, and stress the interactions between LEPand education, occupation and immigration status. I show that thecombination of two weak but credible assumptions provides informative upperbounds on the returns to language skills for certain subgroups of thepopulation. Adding age at arrival as a monotone instrumental variable alsoprovides informative lower bounds.
Labour, Public, Development and Health Economics
nonparametric bounds
language skills
hispanic workers
labor market outcomes
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