He received a B.A. degree from Miles College and M.A. and Ph.D. degrees from Washington State University. As a demographer, he specializes in population distribution and redistribution. His written work has covered such topics as internal migration and urbanization, residential differentiation and geographic mobility within metropolitan areas, and ethnic differences in social and economic well-being. He is currently coprincipal investigator of a project to study the labor market experiences of ethnic populations since 1983, using the 1984 through 1987 panels of the Survey of Income and Program Participation.