Book excerpt: This complete guide to LEGO® Therapy contains everything you need to know in order to set up and run a LEGO® Club for children with autism spectrum disorders or related social communication difficulties and anxiety conditions. By providing a joint interest and goal, LEGO® building can become a medium for social development such as sharing, turn-taking, making eye-contact, and following social rules. This book outlines the theory and research base of the approach and gives advice on all practical considerations including space, the physical layout of the room and choosing and maintaining materials, as well as strategies for managing behaviour, further skill development, and how to assess progress. Written by the pioneer of the approach alongside those who helped form it through their research and evaluation, this evidence-based manual is essential reading for professionals working with autism who are interested in running a LEGO® Club or learning more about the therapy.