Mental Retardation Definition

noun

A condition, usually present from birth, characterized by intellectual functioning that is below average: until recently, the preferred technical term, with levels defined in terms of IQ and ranging from borderline (IQ of 71-84) to mild (IQ of 50-55 to approximately 70) to moderate (IQ of 35-40 to 50-55) to severe (IQ of 20-25 to 35-40) to profound (IQ of below 20-25): in technical use, now largely replaced by intellectual disability.

Webster's New World
Intellectual disability.
American Heritage Medicine

A intellectual disability and developmental disability in which the person has an intelligence quotient below 70 plus difficulty in multiple areas of daily life. Evidence of this disability must have appeared before the person reached adulthood.

Wiktionary
Synonyms:

Mental Retardation Sentence Examples

  • Then McBride said his research showed that Debendox was also responsible for causing mental retardation.

  • At the same time the employers and fellow employees become sensitized to individuals with mild to moderate mental retardation.

  • Subsequently, five further families have been identified, some of which also include individuals with X-linked mental retardation without infantile spasms 48-52.

  • Other research areas include dyslexia and dynamic assessment in persons with severe mental retardation.

  • For pupils with mental retardation there are nearly no changes.

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