Dr. H. Colleen Sinclair is an Associate Professor in the Department of Psychology and Director of the Social Relations Collaborative at the Social Science Research Center. She has more than 20 years experience in research on the perpetration of aggressive behavior and crime, being among the first to conduct empirical research on stalking before anti-stalking laws has even reached all 50 states. Her focus is on understanding individual, environmental, and intergroup dynamics that contribute to antisocial behavior in order to identify opportunities for intervention. This is reflected in her current funding from the National Institute of Justice as PI for a multi-method, longitudinal study to identify determinants of aggressive retaliation, as opposed to prosocial responses, among bullied youth. She is also presently involved in an archival integration of intergroup conflict theories and engaged in various open science initiatives.