Kenneth Alan Bollen is the Henry Rudolf Immerwahr Distinguished Professor of Sociology at the University of North Carolina at Chapel Hill. Bollen joined UNC-Chapel Hill in 1985. He is also a member of the faculty in the Quantitative Psychology Program housed in the L. L. Thurstone Psychometric Laboratory. He is a fellow at the Carolina Population Center, the American Statistical Association and the American Association for the Advancement of Science. He was also the Director of the Odum Institute for Research in Social Science from 2000 to 2010. His specialties are population studies and cross-national analyses of democratization.