Part I. An Overview: Definitions, Epidemiology and Policy Issues: 1. Introduction Dr Jane McCarthy, Professor Regi Alexander and Professor Eddie Chaplin; 2. Aetiology of neurodevelopmental disorders Dr Jana de Villiers; 3. Overview of offenders with intellectual disability Verity Chester Priyanka Tharian, Matthew Slinger, Anto Varughese and Professor Regi Alexander; 4. A critical overview of offenders with attention deficit hyperactive disorder Susan Young, Kelly Cocallis, Corey Lane and Mark David Chong; 5. Overview of offenders with autism spectrum disorders David Murphy and Clare S. Allely; 6. Associations between ASD and types of offences Clare S. Allely and David Murphy; 7. Overview of young people with neurodevelopmental impairments in contact with the youth justice system Professor Prathiba Chitsabesan, Professor Nathan Hughes and Professor Huw Williams; 8. Overview of offenders with foetal alcohol spectrum disorders Dr Raja Mukherjee, Penny A. Cook, David Gilbert and Clare S. Allely; 9. The role of sub threshold neurodevelopmental disorder in offending behaviour Professor Eddie Chaplin and Dr Jane McCarthy; 10. Comorbid mental disorders and neurodevelopmental conditions Kiriakos Xenitidis, Caryl Marshall and Jane McCarthy; Part II. Assessment and Therapeutic Approach: 11. ADHD: assessment and therapeutic approaches within forensic settings Dr Bhathika Perera, Dr Maheera Tyler and Dr Zaid Al-Najjar; 12. ASD - Assessment and therapeutic approaches within forensic settings Dr David Murphy and Dr Jane Radley; 13. Intellectual disability: assessment and therapeutic approaches within forensic settings Ken Courtenay and Dr Mhairi Duff; 14. Risk assessments in people with neurodevelopmental disorders Dr Catrin Morrissey; 15. Assessment and treatment of young offenders Dr Louise Theodosiou and Dr Rachel Elvins; Part III. Criminal Justice Pathways and Legal Issues: 16. Criminal justice pathways and neurodevelopmental disorders Professor Andrew Forrester, Dr Iain McKinnon and Dr Samir Srivastava; 17. The Mental health act and other relevant legislation in relation to neurodevelopmental disorders in the UK Harm Boer, Eleanor Brewster and Ryan McHugh; 18. Fitness to plead and neurodevelopmental disorders Penelope Brown, Salma Ali and Elizabeth Harris; 19. Forensic services for neurodevelopmental disorders - An English perspective. Dr John Devapriam and Dr Harinder Bains; 20. Offenders with neurodevelopmental disorders and/or intellectual disabilities in four nordic countries Erik Søndenaa and Søren Holst; 21. Forensic neurodevelopmental disabilities - A perspective from Ontario, Canada on pathways and services Voula Marinos, Lisa Whittingham, Jessica Jones and The Hon. Mr. Justice Richard D. Schneider ; 22. Forensic aspects of neurodevelopmental disabilities - An Australasian perspective Dr Cathy Franklin; 23. Concluding comments