The majority of children in the U.S. and many other high-income nations are now cared for many hours per week by people who are neither their parents nor their school teachers. The role of such preschool and out of school care is potentially two-fold: First, child care makes it feasible for...

Few United States government programs are as controversial as those designed to aid the poor. From tax credits to medical assistance, aid to needy families is surrounded by debate—on what benefits should be offered, what forms they should take, and how they should be administered. The past few...