This paper presents the econometric approach to causal modeling. It is motivated by policy problems. New causal parameters are defined and identified to address specific policy problems...

This study analyzes the treatment effects of public training programs for the unemployed inGermany. Based on propensity score matching methods we extend the picture that has beensketched in previous studies by estimating treatment effects of medium-term programs fordifferent sub-groups with...

Childcare subsidies are typically advocated as a means to making paid employmentprofitable for mothers, but also have important ramifications for the use and quality ofpaid childcare. Even if one is concerned primarily with the quantity aspect, the qualitydimension cannot be ignored. This paper...