Barney Cohen is director of the Committee on Population at the National Research Council. For the past 14 years he has worked at the National Research Council on numerous domestic and international populationrelated issues. He has an M.A. in economics from the University of Delaware and a Ph.D. in demography from the University of California at Berkeley.
Alex Ezeh is the executive director of the African Population and Health Research Center, in Nairobi, Kenya. Prior to joining the center in November 1998, he worked at Macro International Inc. for six years, where he provided technical expertise to governmental and nongovernmental institutions in several African countries in the design and conduct of demographic and health surveys. His research interests include health inequity, health consequences of third world urbanization, gender and reproductive outcomes and aging. He has a Ph.D. in demography from the University of Pennsylvania.
Edwin Kaseke is director of the School of Social Work and professor of Social Work at the University of Zimbabwe in Harare. He serves on the editorial board of several journals, including the Journal of Social Development in Africa, the Journal of Social Policy and Administration, and the International Social Work Journal. He is a former member of the executive committee and board member of the International Association of Schools of Social Work. He has consulted for many national and international organizations including International Development Research Centre-Canada, the International Labour Organization, UNICEF, GTZ, the Friedrich Ebert Foundation, and the governments of Swaziland, Namibia, and Zimbabwe. He is the author of books and articles on social security systems and other formal and informal social welfare systems in Africa. He has B.S.W. and Ph.D. degrees from the University of Zimbabwe and an M.S. from the London School of Economics and Political Science.
Barthélémy Kuate-Defo is professor of demography and preventive medicine at the University of Montreal. He is a current member of the Committee on Population. His research interests include the epidemiology of aging, fertility and mortality linkages, sexuality and reproductive health, child health and nutrition, African demography, and event history and multilevel methods. Much of this work has been focused on Cameroon. He is the principal investigator of the ongoing population observatory in social epidemiology and of a large-scale quasi-experimental intervention research on reproductive health promotion and family health during the life course in Cameroon. He has a Ph.D. in population studies from the University