John L. Worrall is Professor of Criminology and Program Head at the University of Texas at Dallas (UTD). A Seattle native, he received a B.A., double majoring in psychology and law and justice, from Central Washington University in 1994. Both his M.A. (criminal justice) and Ph.D. (political science) were received from Washington State University, where he graduated in 1999. From 1999-2006, he was a member of the criminal justice faculty at California State University, San Bernardino. He joined UTD in Fall 2006, was promoted to full professor in 2008, and in 2010 was selected to direct the criminology program.Dr. Worrall has published articles and book chapters on a wide range of topics ranging from legal issues in policing to crime measurement, having recently been ranked one of the most prolific sole and lead authors in the discipline. Courses he regularly teaches (and has authored texts for) include introductory criminal justice, criminal procedure, and crime control policy. As Program Head at UTD, Dr. Worrall directs undergraduate, M.S., and Ph.D. programs in criminology, including an online MS program, which he developed. He is active in the Academy of Criminal Justice Sciences, the American Society of Criminology, and a number of regional associations. Finally, he continues to serve as editor of the journal Police Quarterly, a position he has held since 2008.