The field of autism has been growing at an unprecedented rate in recent years. In addition to an actual rise in the number of classic DSM-IV cases, broadened diagnostic criteria have uncovered a wider range of autistic behaviors and ability levels. The third edition of this well-known text continues the mission of its predecessors--to present a comprehensive, readable, up-to-date overview of the field of autism, one that links research, theory, and practice in ways that are accessible to both practitioners and parents. Key features include: *Expanded Coverage--To accommodate the recent explosion of research, the book has been expanded from 11 to 14 chapters that examine the impact of autism on the individual and the family from infancy through adulthood.