Andrjez Nowak (left)
Florida Atlantic University

Dr. Nowak is a permanent half-time member of the Psychology Department. He is also Director of the Center for Complex Systems at University of Warsaw , Poland , and he holds faculty positions at University of Warsaw and the Professional School of Social Psychology in Warsaw . His current research projects include the use of cellular automata to simulate the emergence and maintenance of self-concept and linear and non-linear scenarios of societal change, the use of attractor neural networks to model interpersonal and group dynamics, and the use of coupled dynamical systems to simulate the emergence of personality through social coordination.

Ron Prinz (center)
University of South Carolina

Dr. Prinz is Professor of Psychology at the University of South Carolina. He specializes in the areas of child clinical psychology, prevention and treatment of conduct disorders, family intervention, and clinical research methodology.

Margaret Ensminger (center)
Johns Hopkins University 

Dr. Ensminger is a sociologist at the Johns Hopkins School of Public Health. She has been involved with the Woodlawn longitudinal study of inner city youth since 1968. The overall focus of this study has been to understand the early family, individual, and community factors that lead to various trajectories over the life course.

Carl Leukefeld (right)
University of Kentucky

Dr. Leukefeld is Professor of Behavioral Science, Psychiatry, Oral Health Science and Social Work; and Chair of the Department of Behavioral Science and Director of the Center on Drug and Alcohol Research, with a graduate appointment in Sociology. His research interests include treatment interventions, outcomes, HIV prevention, criminal justice sanctions, health services, and rural populations.

Ken Winters (2nd from right)
University of Minnesota

Dr. Winters is Associate Professor of Psychiatry at University of Minnesota and Director of the Center for Adolescent Substance Abuse Research. His research has focused on the assessment and treatment of adolescent drug abuse.  Other research interests include the root causes of addiction and problem gambling.

John T. Cacioppo (center)
University of Chicago

Dr. Cacioppo is the Tiffany and Margaret Blake Distinguished Service Professor at The University of Chicago. He is also the Director of the Social Psychology Program at The University of Chicago and the co-Director of the Institute for Mind and Biology. His research interests include attitudes, close relationships, emotion, evolution/genetics, health, personality, persuasion/social influence, prejudice/stereotyping, psychophysiology and social cognition.

Leslie Yonce
University of Minnesota

Niels Waller
Vanderbilt University

Dr. Yonce’s research interests focus on multivariate taxometric procedures which are increasingly being used in the social and biological sciences to test competing models of latent structure. These procedures are uniquely suited for determining whether a pool of indicators measure a latent dimensional (latent factors, latent traits) or typological (natural kinds, classes, nonarbitrary clusters) construct.

Dr. Waller is Director of the Quantitative Methods Program and Professor of Psychology at Vanderbilt University. His relevant interests are the development and application of quantitative models of individual differences. Particularly interested in item response theory, taxometric methods, factor analysis, and quantitative genetics.