New genetic causes of mental retardation are being discovered at rapid rates every day more people are diagnosed with specific syndromes. This comprehensive and timely guide identifies characteristics of people who have these syndromes to help you understand their behaviors and their needs, so you'll be able to provide better interventions and create wider community inclusion.

You'll get easy-to-read, detailed discussions of four major syndromes Down, Williams, fragile X, and Prader-Willi on genetic causes and implications, prevalence, basic physical characteristics, cognitive profiles,...