Alice S. Rossi, editor of the volume and author of six of the thirteen chapters, is the Harriet Martineau Professor Emerita of Sociology, University of Massachusetts, Amherst. She is a past president of the American Sociological Association and the author of many books, including Sexuality across the Life Course, also published by the University of Chicago Press. Both she and the contributing authors were members or associates of the Research Network on Successful Midlife Development, a network supported by the John D. and Catherine T. MacArthur Foundation.