DOES IQ DECLINE WITH AGE IN FRAGILE-X A METHODOLOGICAL CRITIQUE
DOES IQ DECLINE WITH AGE IN FRAGILE-X A METHODOLOGICAL CRITIQUE
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DOI：
10.1002/ajmg.1320510412
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发表时间：
1994-07-15
期刊：
影响因子：
--
通讯作者：
HAY, DA
中科院分区：
文献类型：
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作者：
HAY, DA
The recent claims for a decline in intelligence test performance in males and females with fragile-X (fra(X)) syndrome have implications both clinically and in evaluating the underlying neurological basis. This commentary identifies three key issues in evaluating evidence for a decline and in planning future, more co-ordinated efforts. These are (1) problems in combining data across different intelligence tests and/or different ages with potentially incompatible norms, task demands, and models of the structure of intelligence; (2) limitations in applying to low ability persons tests designed to discriminate best around the population average; and (3) specific cognitive deficits and behavioral problems in fra(X) individuals which may be confounded with the task demands of particular IQ tests at particular ages. While the decline in ability may be a real phenomenon rather than an artifact, recommendations are made about the psychometric requirements for a larger and more definitive collaborative study. (C) 1994 Wiley-Liss, Inc.
