What works for offenders with intellectual and developmental disabilities: systems for evaluating evidence and book overview / Leam A. Craig, William R. Lindsay and Dorothy Griffiths -- What works: ethical considerations when treating offenders with intellectual and developmental disabilities / Dorothy Griffiths -- Protecting the rights of people with intellectual disabilities in correctional settings / Frank Lambrick, Astrid Birgden, Chelsea Troutman & Danielle McLeod -- Behavioural and cognitive phenotypes in genetic disorders associated with offending / Lauren J. Rice, Stewart L. Einfeld & Patricia Howlin -- Diagnosis of personality disorder in offenders with intellectual and developmental disabilities / Nigel Beail -- Assessment of anger and aggression / Paul Willner, Andrew Jahoda & Ken McMahon -- Psychological assessment procedures for sex offenders with intellectual and developmental disabilities / Lesley R. Steptoe & Amanda M. Michie -- Assessment for social problem-solving, social information processing and criminal thinking / Peter E. Langdon -- Assessment of alcohol use disorder and alcohol-related offending behaviour / Joanne E.L. VanDerNagel, Neomi van Duijvenbode & Robert Didden -- Assessing people with intellectual disabilities who have engaged in fire setting / Samuel J. Tromans, Verity Chester & Regi T. Alexander -- Biopsychosocial assessment for approach for offenders with intellectual disabilities / Deborah Richards, Tyler Oswald & J. Paul Fedoroff -- Using a multicomponent model in the assessment of persons with intellectual disabilities and problems in sexual behaviour / Robin J. Wilson, Stephanie Ioannou & Kendra Thomas -- Supporting people with intellectual and developmental disabilities leaving prison / Kathy Ellem, Michelle Denton & Danielle Davidson -- Prison-based programmes for people with intellectual and developmental disabilities / Philip Snoyman, Berindah Aicken & Jayson Ware -- Treatment of anger and violence in individuals with intellectual disability / Robert Didden, Henk Nijman, Monique Delforterie & Marije Keulen-De Vos -- Treatment of inappropriate sexual behaviour by people with intellectual developmental disabilities / Leam A. Craig -- Treatment for social problem solving and criminal thinking / Susan Hayes -- Treating substance misuses among offenders with intellectual and developmental disabilities / Daniel Newton & Jane McGillivary -- Treatment for emotional difficulties related to offending for people with an intellectual disability / Paul Oxnam & Emma Gardner -- Treatment outcomes for people with autistic spectrum disorder in forensic settings / Peter Sturmey -- Pharmacological approaches for offenders with intellectual and developmental disabilities / Daniel Turner & Peer Briken -- Future directions for what works for offenders with intellectual and developmental disabilities / Dorothy Griffiths & Leam A. Craig.