The Best Thing We Could Do About Inequality Is Universal Preschool

The latest research, from a new National Bureau of Economic Research working paper by James Heckman and Lakshmi Raut, concludes that a policy of free preschool for all poor children would have a raft of cost-effective benefits for society and the economy: It would increase social mobility, reduce income inequality, raise college graduation rates, improve criminal behavior (saving some of the societal expenses associated with it), and yield higher tax revenue thanks to an increase in lifetime wages.

Keep such a policy in place for years, and its benefits accrue from one generation to the next. Put a child in preschool, in other words, and that improves her chances of graduating college. But it also improves the future education and earnings prospects of her children and grandchildren. Obviously, the quality of a school that a child attends later in life matters, too. And we'd be foolish to invest in preschool without continuing to invest in poor children as they age.

But this mounting evidence suggests that we should be front-loading our investment in the most disadvantaged children during the ages 2-4, when their brains develop at an extremely high rate, and while they're learning social, motivational, cognitive and analytical skills. Preschool is when kids first learn to work together in teams, to resolve problems, to listen and cooperate – all skills that directly come into play in the workforce.

Life cycle skill formation is dynamic in nature. Skill begets skill; motivation begets motivation. Motivation cross-fosters skill, and skill cross-fosters motivation. If a child is not motivated to learn and engage early on in life, the more likely it is that when the child becomes an adult, he or she will fail in social and economic life. The longer society waits to intervene in the life cycle of a disadvantaged child, the more costly it is to remediate disadvantage.