Alex R. Piquero is Ashbel Smith Professor in the Program in Criminology in the School of Economic, Political, and Policy Sciences at the University of Texas at Dallas. He is also Adjunct Professor at the Key Centre for Ethics, Law, Justice, and Governance at Griffith University, Australia, and Faculty Affiliate at the Center for Violence and Injury Prevention in the George Warren Brown School of Social Work at Washington University in St. Louis. From 2008 to 2013 he was co-editor of the Journal of Quantitative Criminology and has published over 300 peer-reviewed articles in the areas of criminal careers, crime prevention, criminological theory, and quantitative research methods. He has collaborated on several books, including Offending from Childhood to Late Middle Age: Recent Results from the Cambridge Study in Delinquent Development (2013), Handbook of Quantitative Criminology (2011), and Key Issues in Criminal Careers Research: New Analyses of the Cambridge Study in Delinquent Development (2007).