Robert A. Hummer, Assistant Professor of Sociology at the University of Texas, Austin, received his Ph.D. from Florida State University. Prior to joining the University of Texas, he served as Assistant Professor and Senior Research Scientist at the Louisiana Population Data Center, Louisiana State University, and East Carolina University. His main research interests lie in the area of mortality differentials, health behavior and outcomes, race/ethnicity, socio-economic factors, and health, and population change.