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Publication - Professor Gerard Van den Berg

    Treatment evaluation with selective participation and ineligibles


    Dias, MC, Ichimura, H & van den Berg, GJ, 2013, ‘Treatment evaluation with selective participation and ineligibles’. Journal of the American Statistical Association, vol 108., pp. 441-455


    Matching methods for treatment evaluation based on a conditional independence assumption do not balance selective unobserved differences between treated and nontreated. We derive a simple correction term if there is an instrument that shifts the treatment probability to zero in specific cases. Policies with eligibility restrictions, where treatment is impossible if some variable exceeds a certain value, provide a natural application. In an empirical analysis, we exploit the age eligibility restriction in the Swedish Youth Practice subsidized work program for young unemployed, where compliance is imperfect among the young. Adjusting the matching estimator for selectivity changes the results toward making subsidized work detrimental in moving individuals into employment.

    Full details in the University publications repository