We illustrate the use of nonparametnc quantile regression in examining the impacts of social programs on the distributions of noncategorical outcome measures. We apply the method to earnings effects and income effects in four evaluations of employment and training programs for welfare...

A recent random assignment evaluation of California's Greater Avenues for Independence (GAIN) program showed that welfare recipients required to participate in basic education did not improve reading and math skills relative to controls. Reliability of test score effects estimates was reduced,...