Collin Payne’s research integrates approaches from demography, epidemiology, sociology, and biostatistics to improve empirical and theoretical models of population health in low-resource contexts. He received his PhD from the University of Pennsylvania, where his dissertation focused on the health of aging populations in sub-Saharan Africa and Latin America. As a Bell Fellow, Collin studied how the HIV epidemic and the introduction of new treatments impacted population health, economic activity, and family structure in Sub-Saharan Africa. His methodological work centers on developing and improving the estimation of macro-level population processes using micro-level longitudinal data, and advancing formal demographic techniques for projecting cohort life expectancy.