Highlighting recent research on the long-lasting benefits of the Perry Preschool Project, an American Public Radio Marketplace story made the case Investing in early childhood education is an effective way to create a more equitable society. The story cited research from Jorge Luis GarcĂa, Frederik H. Bennhoff, Duncan Ermini Leaf, and James Heckman that used real life-cycle data on program participants, their siblings, and their children to produce more accurate estimates of the return on investment of such programs.