Patricia H. Hawley is an assistant professor of Developmental and Social Psychology at the University of Kansas. She received her Ph.D. from the University of California - Riverside. Her research focuses on the evolutionary underpinnings of social development and group dynamics. Todd D. Little is professor of psychology at the University of Kansas and director of its Quantitative Training program. He received his Ph.D. in Developmental Psychology from the University of California -Riverside. His research is on the development of self-regulation and on applied quantitative analysis. Phi...