Karen is an Associate Professor of Quantitative Research Methodology in the Department of Education at the University of California, Santa Barbara (UCSB). She has been at UCSB since 2009. Prior to joining the department, she was a Postdoctoral Fellow at the Department of Mental Health at Johns Hopkins University. She earned her PhD at UCLA, working with Bengt Muthen. Her research focus is on latent variable models, specifically mixture models and she has published many articles and book chapters on developments, best practices, and applications of latent class analysis, latent transition analysis, and growth mixture models. She is dedicated to teaching and working with applied researchers from all areas of social researches to integrate latent variable models as a means to answering complex research questions.