%0 Journal Article %A Greg J. Duncan %A Aaron J. Sojourner %T Can Intensive Early Childhood Intervention Programs Eliminate Income-Based Cognitive and Achievement Gaps? %D 2013 %R 10.3368/jhr.48.4.945 %J Journal of Human Resources %P 945-968 %V 48 %N 4 %X How much of the income-based gaps in cognitive ability and academic achievement could be closed by a two-year, center-based early childhood education intervention? Data from the Infant Health and Development Program (IHDP), which randomly assigned treatment to low-birth-weight children from both higher- and low-income families between ages one and three, shows much larger impacts among low- than higher-income children. Projecting IHDP impacts to the U.S. population’s IQ and achievement trajectories suggests that such a program offered to low-income children would essentially eliminate the income-based gap at age three and between a third and three-quarters of the age five and age eight gaps. %U https://jhr.uwpress.org/content/wpjhr/48/4/945.full.pdf