Over 80 genetic conditions have now been reported in people who have also been diagnosed with autism spectrum disorders (ASD). A number of these have specific implications for management and intervention, which if not identified, can result in a sub-optimal level of care, complications or even permanent damage. Kenneth J. Aitken shows that the notion of a single condition known as ‘autism’ is no longer tenable, challenging current trends in the diagnosis and management of these behaviours by drawing on what has been learned about brain function, genetics, epidemiology and neurology. The book covers the biology and genetics of ASD, provides summaries of the various related genetic conditions and research linking these to ASD, treatment and management issues, animal models and, for each, information on support groups and relevant professional organizations. An A-Z of Genetic Factors in Autism is an essential resource for a wide range of clinical professionals and students interested in the autism spectrum disorders, including clinical and educational psychologists, dieticians, psychiatrists, neurologists, school staff, social workers and residential care staff.