William G. Axinn  professor of survey research, population studies, sociology and public policy at the University of Michigan. Axinn is a social demographer studying community, intergenerational, and social psychological influences on marriage, childbearing, reproductive health, mental health and the natural environment. He is former director of Michigan’s Survey Research Center with an active program of methodological research on longitudinal studies, survey data collection and mixed method studies. He is director of the Chitwan Valley Family Study (CVFS), a 20-year, mixed method longitudinal study in Nepal and a member of the Michigan team implementing the U.S. American Family Health Study (AFHS).