Stability of cognitive performance in children with mild intellectual disability.

Détails

ID Serval
serval:BIB_38CB125F3EF5
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Stability of cognitive performance in children with mild intellectual disability.
Périodique
Developmental Medicine and Child Neurology
Auteur⸱e⸱s
Jenni O.G., Fintelmann S., Caflisch J., Latal B., Rousson V., Chaouch A.
ISSN
1469-8749 (Electronic)
ISSN-L
0012-1622
Statut éditorial
Publié
Date de publication
2015
Peer-reviewed
Oui
Volume
57
Numéro
5
Pages
463-469
Langue
anglais
Notes
Publication types: Journal Article Publication Status: ppublish
Résumé
AIM: Longitudinal studies that have examined cognitive performance in children with intellectual disability more than twice over the course of their development are scarce. We assessed population and individual stability of cognitive performance in a clinical sample of children with borderline to mild non-syndromic intellectual disability.
METHOD: Thirty-six children (28 males, eight females; age range 3-19y) with borderline to mild intellectual disability (Full-scale IQ [FSIQ] 50-85) of unknown origin were examined in a retrospective clinical case series using linear mixed models including at least three assessments with standardized intelligence tests.
RESULTS: Average cognitive performance remained remarkably stable over time (high population stability, drop of only 0.38 IQ points per year, standard error=0.39, p=0.325) whereas individual stability was at best moderate (intraclass correlation of 0.58), indicating that about 60% of the residual variation in FSIQ scores can be attributed to between-child variability. Neither sex nor socio-economic status had a statistically significant impact on FSIQ.
INTERPRETATION: Although intellectual disability during childhood is a relatively stable phenomenon, individual stability of IQ is only moderate, likely to be caused by test-to-test reliability (e.g. level of child's cooperation, motivation, and attention). Therefore, clinical decisions and predictions should not rely on single IQ assessments, but should also consider adaptive functioning and previous developmental history.
Pubmed
Web of science
Création de la notice
11/05/2015 12:19
Dernière modification de la notice
20/08/2019 13:28
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