pervasive developmental disorder

American Heritage
Medical Dictionary

pervasive developmental disorder per·va·sive developmental disorder (pər-vā'sĭv, -zĭv)
Any of a group of disorders of infancy, childhood, or adolescence that are characterized by distortions in the development of the basic psychological functions such as language, social skills, attention, perception, reality testing, and movement.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
pervasive developmental disorder   (pər-vā'sĭv)  Pronunciation Key 
Any of several developmental disorders, such as autism or asperger's syndrome, characterized by severe deficits in social interaction and communication or by the presence of repetitive, stereotyped behaviors. Most of these disorders are evident in the first years of life.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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