Deming, David. “Early Childhood Intervention and Life-Cycle Skill Development.” American Economic Journal: Applied Economics (2009): 111-34.
138
Magnuson, K., C. Ruhm, and J. Waldfogel. “How Much Is Too Much? The Influence of Preschool Centers on Children’s Social and Cognitive Development.” Economics of Education Review 26 (2007): 52-66.
