Definitions for "Mental Retardation"
Intellectual functioning that is significantly below average, usually indicated by IQ scores below 70 coupled with significantly below average adaptive functioning.
a condition occurring during the developmental period, characterized by below normal general intelligence and difficulty coping with the social demands of a person's environment; traditionally defined as an IQ score below 70 with impaired adaptive behavior
A major group of disorders of infancy, childhood, or adolescence characterized by intellectual functioning that is significantly below average (IQ of 70 or below), manifested before the age of 18 by impaired adaptive functioning. See also: Treatment