Mental retardation Mild mental retardation Approximately 85% of the mentally retarded population is in the mildly retarded category. Their IQ score ranges from 50–70, and they can often acquire academic skills up to about the sixth-grade level. They can become fairly self-sufficient and in some cases live independently, with community and social support. Moderate mental retardation About 10% of the mentally retarded population is considered moderately retarded. Moderately retarded persons have IQ scores ranging from 35–55. They can carry out work and self-care tasks with moderate supervision. They typically acquire communication skills in childhood and are able to live and function successfully within the community in such supervised environments as group homes . Severe mental retardation About 3–4% of the mentally retarded population is severely retarded. Severely retarded persons have IQ scores of 20–40. They may master very basic self-care skills and some communication skills. Many severely retarded individuals are able to live in a group home.
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Mental retardation, Moderate mental retardation, mentally retarded population