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| Journal of Intellectual… | 1 |
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| Carr, J. | 1 |
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Direct linkCarr, J. – Journal of Intellectual Disability Research, 2005
Background: Longitudinal studies show that in the general population IQ declines with age: early and rapidly in the case of performance IQ, later and more slowly in the case of verbal IQ. These populations have not apparently included people with intellectual disabilities (ID). Method: A literature search identified 11 studies, some…
Descriptors: Cognitive Ability, Verbal Ability, Performance Tests, Longitudinal Studies
