Psychologists have long debated the role of early experience in social and cognitive development. However, traditional approaches to studying this issue are not well positioned to address this debate. The authors present simulations that indicate that the associations between early experiences and later outcomes should approach different…

The Center for Research on Education Outcomes (CREDO) at Stanford University conducted a large-scale analysis of the impact of charter schools on student performance. The center's data covered 65-70% of the nation's charter schools. Although results varied by state, 17% of the charter school students have significantly higher math results than …

This report identifies and synthesizes what is known about specific program features for children and youth aged 6-17 that might be manipulated or regulated-components such as staff wages, group size, activities, and theoretical approach that make up the "how" of program implementation. The authors have culled information from the limited extant…