Many severely retarded individuals are able to live in a group home.Only 1–2% of the mentally retarded population is classified as profoundly retarded.Their retardation is often caused by an accompanying neurological disorder.
The AAMR classification system focuses on the capabilities of the retarded individual rather than on his or her limitations.
Moderately retarded persons have IQ scores ranging from 35–55.
They can carry out work and self-care tasks with moderate supervision.
Some cases of mild mental retardation are not diagnosed before the child enters preschool or kindergarten.
These children typically have difficulties with social, communication, and functional academic skills.
They can become fairly self-sufficient and in some cases live independently, with community and social support.