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A peer-reviewed quarterly journal publishing articles by academics and practitioners.
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Type: Journal Articles
Keywords: matching methods, propensity score, policy evaluation, treatment effect, regression dis-continuity, selection, subsidized work, youth unemployment.
Matching methods for treatment evaluation based on a conditional independence assumption do not balance selective unobserved differences between treated and non-treated. We derive a simple correction term if there is an instrument that shifts the treatment probability to zero in special 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 towards making subsidized work detrimental in moving individuals into employment.
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