Experimental criminology is a part of a larger and increasingly expanding scientific research and evidence-based movement in social policy. The essays in this volume report on new and innovative contributions that experimental criminology is making to basic scientific knowledge and public policy. Contributors explore cutting-edge experimental and quasi-experimental methods and their application to important and topical issues in criminology and criminal justice, including neurological predictors of violence, peer influence on delinquency, routine activities and capable guardianship, early childhood prevention programs, hot spots policing, and correctional treatment for juvenile and adult offenders. It is the first book to examine the full scope of experimental criminology, from experimental tests – in the field and in the laboratory – of criminological theories and concepts to experimental and quasi-experimental evaluations of crime prevention and criminal justice interventions.