Phoebe Caldwell's remarkable new book makes accessible for the first time the complex, intricate inner and sensory worlds of people whose learning disabilities are combined with autistic spectrum disorder and, often, difficult-to-manage behaviour. Based on many years of working with such people, many of whom have withdrawn into a world of their own, she explores the different sensory reality they experience, showing it to be infinitely more complex and varied than is widely understood. She...