Diagnosing Autism Spectrum Disorders: A Lifespan Perspective is the first book of its kind to provide authoritative information for medical and mental health professionals on how to properly evaluate and diagnose autism spectrum disorders in individuals of all ages. * The first book of its kind which demonstrates how to conduct an appropriate diagnostic interview to assess a child for an Autism Spectrum Disorder * Considers the issues of Autism Spectrum Disorders in children, teenagers, and adults * Aimed at both medical and mental health professionals * Includes an in-depth treatment of the entire diagnostic process