William R. Lindsay, PhD, was a Consultant Forensic Clinical Psychologist and Head of Research for Danshell, and Professor of Learning Disabilities and Forensic Psychology at Abertay University, Dundee, Scotland.

Leam A. Craig, PhD, is a Consultant Forensic Clinical Psychologist and Partner at Forensic Psychology Practice Ltd. He is a visiting Professor of Forensic Clinical Psychology, Birmingham City University, Hon. Professor of Forensic Psychology, University of Birmingham, and Hon. Assoc. Professor of Forensic Psychology, University of Nottingham, UK.

Dorothy Griffiths, PhD, is Emerita Professor at the Department of Child and Youth Studies and Centre for Applied Disability Studies, and former Co-Director of the International Dual Diagnosis Certificate Programme, Brock University, St. Catharines, Ontario, Canada. Less