"This is a really important and impressive collection of the best of recent psychological research applied to crime and policing. The benchmark of using the Research Evaluation Framework has focused the book on high quality research with demonstrated impact which makes this collection both relevant and compelling for both students and practitioners." —Dr Peter Neyroud, former Chief Constable of Thames Valley, CEO of the National Policing Improvement Agency, University of Cambridge, UK"Across the world, police and criminal justice systems are wrestling with demanding issues of sexual offending, facial recognition, terrorism, rehabilitation, peaceful order maintenance, securing the truth and legitimacy. For those inside or outside those systems who want to make a difference, this collection of ideas and research, supported by promising or more convincing evidence of real impact, is a great starting point." —Sir Denis O’Connor, HM Chief Inspector of Constabulary 2009-12, Institute of Criminology Cambridge, UK