Dr. Nancy Morrow-Howell is Ralph and Muriel Pumphrey Professor of Social Work at Washington University in St. Louis, USA. She is a national leader in gerontology, widely known for her work on productive and civic engagement of older adults. Dr. Morrow-Howell is a fellow of the Gerontological Society of America, chair-elect of the SRPP section of GSA, and a member of GSA’s Expert Workgroup on Civic Engagement in an Older America. She is on the Editorial Board of both The Gerontologist and the Journals of Gerontology: Social Sciences. Dr. Ada C. Mui is a Professor of Social Work at the Columbia University School of Social Work, USA. She has been recognized as one of the leading social gerontologists in cross-cultural research. She is a Fellow of the Gerontological Society of America and an Honorary Professor at Beijing Normal University, Beijing Youth Politics College, and the University of Hong Kong, China. In Taiwan, she is a Research Fellow at the Social Policy Research Center at the National Taiwan University.