Jason Purnell is with For the Sake of All, a multi-disciplinary approach to improving the health of African Americans in St. Louis. Purnell, an assistant professor in the Brown School of Social Work at Washington University, has done research into how socioeconomic and cultural factors affect health. In this interview, Purnell tells how For the Sake of All puts an emphasis on early childhood intervention because it improves the health of the children and makes sound economic policy.