Vern L. Bengtson, PhD, is AARP/university professor of gerontology emeritus and research professor, Edward R. Roybal Institute on Aging, School of Social Work, University of Southern California, Los Angeles, California.Richard A. Settersten, Jr., PhD, is Professor of Social and Behavioral Health Sciences, Oregon State University, where he is also Endowed Director of the Hallie E. Ford Center for Healthy Children and Families and a member of the Center for Healthy Aging Research.