Human capital theory has offered insights on the nature and causes of inequality in personal incomes by focusing on such measures as years of schooling completed and education’s relationship to labor market outcomes. One line of research has explored individual choices, for example, regarding education, while another branch has investigated determinants of human capital, such as standardized tests that signal potential skills for employers. To date, economics research and related work in the contemporary psychology of education literature are dominated by an empirical and theoretical focus on the individual.

In contrast, this working paper explores a new line of economics research that incorporates insights from sociology, which is concerned with explaining human phenomena through group settings, including how such interactions shape individuals and their choices, such as those that augment human capital.

The authors apply this analytical lens to a series of early childhood programs delivered to low-income families in Chicago’s South Side. The goals of the intervention were to examine how investing in cognitive and non-cognitive skills of low-income children aged 3 to 4 affects their short- and long-term outcomes, and to evaluate the effectiveness of investing directly in the child’s education versus indirectly through the parents. To that end, families of over 2,000 disadvantaged children were randomized into (i) an incentivized parent-education program, (ii) a high-quality preschool program (Pre-K), or (iii) a control group. The children’s cognitive and non-cognitive skills were assessed on a regular basis, starting before the randomization and continuing into the middle and end of the programs. Follow-up assessments were also conducted on a yearly basis.

Exploring insights from sociology to focus on explorations of group interactions, the authors find:

  • Large and significant spillover effects on both cognitive and noncognitive skills, with non-cognitive spillover effects about two times larger than the cognitive spillover effects. Interestingly, the spillover effects are localized and fall rapidly as the distance to a treated neighbor increases.
  • Non-cognitive spillover effects are significantly larger for Blacks than Hispanics, with no significant racial differences in cognitive spillover effects. Regarding gender, the authors’ estimates suggest that boys tend to benefit more than girls from cognitive and non-cognitive spillovers, although these gender differences are not significant at the conventional levels.
  • Program effects spill over through two main channels: direct social interactions between children who were randomized during the intervention, and parental interactions.

Given the importance of non-cognitive skills in children’s future labor market and educational outcomes, these findings provide practical insights into designing early interventions to better foster such skills. Specifically, this research suggests that interventions that promote social interactions both within participants and between participants and non-participants are likely to generate larger positive externalities on non-cognitive skills. This research also offers insights to policymakers interested in the science of scaling programs.

More on this topic

Research Briefs·Apr 23, 2024

Early Predictors of Racial Disparities in Criminal Justice Involvement

Andrew Jordan, Ezra Karger, and Derek Neal
Detailed measures of early academic achievement and socioeconomic status are powerful predictors of future criminal justice involvement; however, while reforms that improve school quality and neighborhood environments are likely to reduce future racial disparities in criminal justice involvement, such improvements...
Topics: Early Childhood Education, Economic Mobility & Poverty, Higher Education & Workforce Training
Research Briefs·Feb 23, 2024

Making a Song and Dance About It: The Effectiveness of Teaching Children Vocabulary with Animated Music Videos

Ariel Kalil, Susan Mayer, Philip Oreopoulos, and Rohen Shah
Big Word Club, a digital vocabulary learning program, increases students’ knowledge and retention of words included in the program.
Topics: Early Childhood Education
Podcast Feb 20, 2024

Closing the Achievement Gap: Is There an App for That?

Tess Vigeland and Ariel Kalil
Children whose parents have college degrees are often more skilled readers than children whose parents didn’t attend college. In this episode of The Pie, Harris Policy Professor Ariel Kalil discusses how certain technologies can help improve literacy skills for disadvantaged...
Topics: Early Childhood Education, Technology & Innovation