Frances Owen, PhD is Associate Professor in the Department of Child and Youth Studies and the Centre for Applied Disability Studies, Brock University, Ontario, Canada. She co-directs the International Dual Diagnosis Certificate Program in Habilitative Mental Health. She has co-authored five books in the areas of organizational behaviour and management as well as several articles related to abuse prevention and human rights of people with intellectual disabilities. Dorothy Griffiths, PhD is Associate Dean of Social Sciences and Professor in the Department of Child and Youth Studies and the Centre for Applied Disability Studies, Brock University, Ontario, Canada. She also co-directs the International Dual Diagnosis Certificate Program in Habilitative Mental Health. With nearly 30 years of experience, Dorothy is an acknowledged international expert on therapeutic services for individuals who have a dual diagnosis of intellectual disabilities and mental health concerns.