Nan Lin is Oscar L. Tang Family Professor of Sociology, Duke University. He has conducted research on social capital, social networks, stratification and mobility, and stress coping in the United States, China, Hong Kong, and Taiwan. He has written or edited seven books and published numerous book chapters and journal articles. He is also an Academician at Academia Sinica in Taiwan and holds honorary professorship in many universities in China. Professor Bonnie Erickson received her Bachelor's and Master's degrees from the University of British Columbia before moving to Harvard where she completed her Doctorate in Social Relations. She then spent three years as an Assistant Professor of Sociology and Anthropology at Carleton University before joining the faculty at University of Toronto in 1973. In addition to her work in the Department of Sociology, Erickson is currently cross-appointed to the Centre for Studies on Aging, the Centre for Urban and Community Studies, the Centre for Industrial Relations, and is on the Board of Directors of the Centre for Health Promotion. Erickson has published articles on a wide variety of topics, getting printed in publications including the Canadian Review of Sociology and Anthropology, American Sociological Review, Social Networks, and the Journal of Personality and Social Psychology.