Keith Widaman is a Distinguished Professor of Psychology at the University of California at Davis. He received his Ph.D. in 1982 from the Ohio State University. Widaman has extensive experience in use of multivariate linear models, including regression analysis, factor analysis, structural equation modeling, and the modeling of longitudinal data. His substantive program of research focuses on family, economic, cultural, and other influences on child development and the structure and development of mental abilities and everyday skills and abilities in both representative and developmentally disabled populations. He has published extensively in methods-oriented journals such as Psychological Methods, Multivariate Behavioral Research, and Applied Psychological Measurement, and in substantive journals such as Developmental Psychology, the American Journal on Mental Retardation, Child Development, and Intelligence. Widaman has served on the Editorial Boards of many journals, and is now Editor of Multivariate Behavioral Research. He is a Fellow of the American Psychological Association (Divisions 5, 7, and 33) and the Association for Psychological Science. Widaman received the 1992 Raymond B. Cattell Award for early career contributions to multivariate psychology from the Society of Multivariate Experimental Psychology (SMEP), has twice received the Tanaka Award for best article in SMEP’s journal Multivariate Behavioral Research, and is a Past President of the society. During the late 1990’s, he was Chair of the University of California systemwide Board of Admissions and Relations with Schools, which sets standards for eligibility for admission to the University of California system.