Subnormal intellectual functioning which originates during the developmental period. This has multiple potential etiologies, including genetic defects and perinatal insults. Intelligence quotient (IQ) scores are commonly used to determine whether an individual has an intellectual disability. IQ scores between 70 and 79 are in the borderline range. Scores below 67 are in the disabled range. (from Joynt, Clinical Neurology, 1992, Ch55, p28)
Williams syndrome -- Genetic aspects : Journey from cognition to brain to gene : perspectives from Williams syndrome / [edited by] Ursula Bellugi and Marie St. George
2001
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Williams Syndrome -- genetics : Journey from cognition to brain to gene : perspectives from Williams syndrome / [edited by] Ursula Bellugi and Marie St. George
2001
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Williams syndrome -- Pathophysiology : Journey from cognition to brain to gene : perspectives from Williams syndrome / [edited by] Ursula Bellugi and Marie St. George
Williams Syndrome -- physiopathology : Journey from cognition to brain to gene : perspectives from Williams syndrome / [edited by] Ursula Bellugi and Marie St. George
2001
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Williams Syndrome -- psychology : Journey from cognition to brain to gene : perspectives from Williams syndrome / [edited by] Ursula Bellugi and Marie St. George