James E. Haar Distinguished Professor of Sociology and faculty fellow of the Carolina Population Center at the University of North Carolina at Chapel Hill. She is also a member of the National Academy of Sciences and director of the National Longitudinal Study of Adolescent to Adult Health (Add Health), University of North Carolina, 206 W. Franklin St., Chapel Hill, NC 27516
Carlos Montezuma Professor of Anthropology and faculty fellow of the Institute for Policy Research at Northwestern University. He is also a senior fellow in the Child and Brain Development Program of the Canadian Institute for Advanced Research, 1810 Hinman Ave., Evanston, IL 60208