My research program has two major foci that are continuations of work over the past two decades. The first focus is on the processes of ethnic integration and differentiation in the U.S. I am currently studying the dynamics of the internal migration of immigrants to the U.S. and the linkages between immigration and the migratory patterns of native-born residents. This work extends earlier efforts that examined labor market and household adaptations of immigrants and the evolving living arrangements of immigrant elderly. I recently completed a Census 2000 Population Reference Bureau monograph focusing on shifts over the past three decades in the patterns of integration of immigrant populations, and am working on a Russell Sage Foundation supported investigation of the forces shaping the internal redistribution of the foreign-born population of the United States. That project has involved the successful completion of parallel proposals to the U.S. Census Bureau in order to gain access to restricted Census and American Community Survey data at the New York Census Research Data Center. I am also investigating, with support from the Sloan Foundation, global patterns of international student mobility. The second research focus is on the links between the evolving status of women and major demographic processes. My work in this area includes multi-level studies of child health and survival outcomes and women’s fertility outcomes in India and Sub-Saharan Africa, and an analysis of the interactions between women’s educational attainment, preferences for sons, and fertility outcomes in an India that is experiencing significant fertility declines but remains well above replacement fertility. The major goals of my teaching program are to provide courses and lectures which facilitate, for undergraduate and graduate students, comprehension of the complex interactions between demographic structures and processes and the organizational, technological and cultural dimensions of changing societies.