Mental Retardation Resources
American Association on Intellectual and Developmental Disabilities
Begun in 1876, this organization provides news, information, research and more concerning mental retardation.
American History of Mental Retardation
Following a timeline that begins in the 1400's, this site traces how mental retardation has been identified and treated over time.
The national organization of and for people with mental retardation and related disabilities and their families.
FRAXA Research Foundation
Fragile X syndrome is one of the leading causes of mental retardation today. Read about its causes and methods for maximizing the potential of those who have it.