Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1999-6-10
pubmed:abstractText
In prospective studies of young, fragile X [fra(X)] males with the full mutation, cognitive abilities (IQ scores) and adaptive behavior levels (DQ scores) declined in most subjects tested. Little is known about longitudinal changes in IQ and DQ scores in young fra(X) females, although one earlier retrospective study showed declines in IQ scores in 8 of 11 subjects. To examine fra(X) females prospectively, we tested and retested 13 females with the full mutation, age 4 to 15 years. Nine were tested and retested in North America, and four were evaluated at the Catholic University in Leuven, Belgium. Cognitive abilities of North American females were measured using the Stanford-Binet 4th Edition. Adaptive behavior levels were ascertained from the Vineland Adaptive Behavior Scales. For Belgians, test-retest scores from the Wechsler Intelligence Scales for Children-Revised were used. Subjects were subsequently separated into two age cohorts: those tested initially before age 7 years and those tested initially after age 7 years. Compared with young males with the full mutation and of the same age, females expectedly display a wider range of IQ scores. Test-retest IQ scores showed statistically significant decreases (P < 0.03). Analysis of individual test-retest scores indicate that declines in eight females were statistically significant. Adaptive behavior scores were available only for North American females. Five of nine (55%) showed significant declines in DQ. Like young males with the full mutation, all females with the full mutation attained higher adaptive behavior levels than cognitive scores, i.e., DQ > IQ.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0148-7299
pubmed:author
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
83
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
308-12
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Longitudinal changes in cognitive and adaptive behavior in fragile X females: a prospective multicenter analysis.
pubmed:affiliation
General Clinical Research Center, Yale University, New Haven, Connecticut 06520, USA. gene.fisch@yale.edu
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Multicenter Study