Vern L. Bengtson is AARP/University Professor of Gerontology and Sociology, University of Southern California. He is also president of the Gerontological Society of America. Dr. Bengtson's publications include: "The Social Psychology of Aging; Youth, Generations, and Social Change; Grandparenthood; The Measurement of Intergenerational Relations; Emergent Theories of Aging; "and "The Course of Later Life."