What is an Autism Spectrum Disorder? With Autism and Asperger syndrome now reckoned to affect one in a hundred of our population, this is a question that more and more people are needing to ask. 'Explaining Autism and Asperger Syndrome' is the first book in a new series, the 'Explaining' series and provides a clear and concise introduction to this fascinating and perplexing subject. Written in accessible, non-specialist language it provides an ideal introduction for parents, carers, teachers and employers - for anyone coming across this intriguing condition - on ways to understand what is the Autistic Spectrum.