Discussion of Williams syndrome, a genetic disorder with a variety of medical and developmental features, focuses on frequent outward expression of happiness. Analysis of the unique expression of happiness in individuals with Williams syndrome is followed by discussion of this happiness in the context of other dimensions of the syndrome,…

This paper uses a question-and-answer format to summarize information about Williams syndrome, a neurobehavioral congenital disorder which affects development in cognitive, behavioral, and motor areas. Questions address the following topics: characteristics of Williams syndrome; medical problems associated with Williams syndrome; characteristic…

This information booklet is designed for parents who have a child who has been diagnosed with Pervasive Developmental Disorder (PDD) or Asperger's Disorder. It provides information on: (1) the definition of PDD; (2) the five subtypes of PDD, including PDD "not otherwise specified," Asperger's disorder, autistic disorder, childhood…