Autism and Child Psychopathology Series Series Editor: Johnny L. Matson Johnny L. Matson Peter Sturmey Editors International Handbook of Autism and Pervasive Developmental Disorders                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           