This important and timely book offers a clear, compassionate, and evidence informed guide to using ACT with adults with intellectual disabilities. Tomlinson, Williams, and Boulton bring expert clinical insight and practical tools to a population too often overlooked. A must read for practitioners seeking to promote psychological flexibility in accessible, respectful, and effective ways. I highly recommend it. -- Louise McHugh, Professor of Psychology at University College Dublin, ACT trainer, and author of A Contextual Behavioural Guide to the Self A must-read book for practitioners and anyone involved in delivering or commissioning support services. Compassionate, clear and practical, it's just what is needed to improve the quality of services for people with intellectual and learning disabilities. This is an important book showing how ACT can be adapted to be relevant for everyone in our community. -- Freddy Jackson Brown, Clinical Psychologist