John B. Casterline, the Robert T. Lazarus Professor in Population Studies, Department of Sociology, and director of Ohio State’s Institute for Population Research, has been elected president of the Population Association of America (PAA), the main scientific organization in the U.S. for demographers. For more than 30 years, Casterline has been investigating the causes and consequences of fertility decline in developing countries. He is an affiliate of Ohio State’s Translational Data Analytics Institute. Casterline will serve as president-elect in 2018, president in 2019, and past-president in 2020.