In the first chapter, two of the book's editors—Sally Ozonoff, Ph.D., and Sally L. Rogers, Ph.D.—review some of the critical advances during the years since Kanner's first description of autism in 1943. The next section includes four chapters on different aspects of interdisciplinary approaches to assessment—contributions from psychiatry, psychology, neurology, and pediatrics. These are solid chapters containing a wealth of information. Probably because of space limitations, one major area—speech and communication—is not included.