Center for Effective Global Action

We report the labor market effects of the Jamaica Early Childhood Stimulation intervention at age 31. The study is a small-sample randomized early childhood education stimulation intervention targeting stunted children living in the poor neighborhoods of Kingston, Jamaica. Implemented in 1987-1989, treatment consisted of a two-year home-based intervention designed to improve nutrition and the quality of mother-child interactions to foster cognitive, language and psycho-social skills. The original sample is 127 stunted children between 9 and 24 months old. Our study is able to track and interview 75% of the original sample 30 years after the intervention, both still living in Jamaica and migrated abroad. We find large and statistically significant effects on income and schooling; the treatment group had 43% higher hourly wages and 37% higher earnings than the control group. This is a substantial increase over the treatment effect estimated for age 22 where we observed a 25% increase in earnings.