By James Heckman, Alan Krueger & Benjamin Friedman. Examines the ways in which human capital policies have addressed the surge of inequality in income and wealth in the United States over the past twenty-five years. Taking it as a given that potentially low-income workers would benefit from more human capital in the form of market skills and education; discusses which policies would be most effective in providing it: should more resources be devoted to the entire public school system, or to specialized programs like Head Start? Would relaxing credit restraints encourage more students to attend college? Does vocational training actually work? What is the best balance of private and public sector programs? Read more.