Douglas A. Luke is currently an associate professor of community health at St. Louis University , School of Public Health , where he is serving as chair of the biostatistics division. In 1990 he received his Ph.D. in clinical/community psychology with a minor in quantitative psychology from the University of Illinois . While at the University of Illinois , he studied under a number or notable quantitative scientists and authors, including Phipps Arabie (co-author of Three-way Scaling & Clustering ), Stanley Wasserman (editor of Advances in Social Network Analysis), Larry Jones, Larry Hubert, and Ledyard Tucker. His 1991 article, Expanding Behavior Setting Theory:… Setting Phenotypes in a Mutual Help Organization, was recently selected as one of the ten most influential methodology articles published in the first 25 years of the American Journal of Psychology.