Evaluating the Differential Effects of Alternative Welfare‐to‐Work Training Components: A Reanalysis of the California GAIN Program
结合随机实验与非实验方法，估计加州GAIN项目中劳动力依附培训与人力资本开发培训的差异效应，发现短期LFA更有效，长期HCD更有效。
We show how data from an evaluation in which subjects are randomly assigned to some treatment versus a control group can be combined with nonexperimental methods to estimate the differential effects of alternative treatments. We propose tests for the validity of these methods. We use these methods and tests to analyze the differential effects of labor force attachment (LFA) versus human capital development (HCD) training components with data from California's Greater Avenues to Independence (GAIN) program. While LFA is more effective than HCD training in the short term, we find that HCD is relatively more effective in the longer term.