Basal ganglia morphometry and repetitive behavior in young children with autism spectrum disorder / Annette ESTES in Autism Research, 4-3 (June 2011)  

Public ISBD [article]  inAutism Research > 4-3 (June 2011) . - p.212-220 Titre : Basal ganglia morphometry and repetitive behavior in young children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Annette ESTES, Auteur ; Dennis W.W. SHAW, Auteur ; Bobbi F. SPARKS, Auteur ; Seth D. FRIEDMAN, Auteur ; Jay N. GIEDD, Auteur ; Geraldine DAWSON, Auteur ; Matthew BRYAN, Auteur ; Stephen R. DAGER, Auteur Année de publication : 2011 Article en page(s) : p.212-220 Langues : Anglais (eng) Mots-clés : neuroimaging  preschoolers  clinical psychology  repetitive behavior  autism spectrum disorders Index. décimale : PER Périodiques Résumé : We investigated repetitive and stereotyped behavior (RSB) and its relationship to morphometric measures of the basal ganglia and thalami in 3- to 4-year-old children with autism spectrum disorder (ASD; n = 77) and developmental delay without autism (DD; n = 34). Children were assessed through clinical evaluation and parent report using RSB-specific scales extracted from the Autism Diagnostic Observation Schedule (ADOS), the Autism Diagnostic Interview, and the Aberrant Behavior Checklist. A subset of children with ASD (n = 45), DD (n = 14), and a group of children with typical development (TD; n = 25) were also assessed by magnetic resonance imaging. Children with ASD demonstrated elevated RSB across all measures compared to children with DD. Enlargement of the left and right striatum, more specifically the left and right putamen, and left caudate, was observed in the ASD compared to the TD group. However, nuclei were not significantly enlarged after controlling for cerebral volume. The DD group, in comparison to the ASD group, demonstrated smaller thalami and basal ganglia regions even when scaled for cerebral volume, with the exception of the left striatum, left putamen, and right putamen. Elevated RSB, as measured by the ADOS, was associated with decreased volumes in several brain regions: left thalamus, right globus pallidus, left and right putamen, right striatum and a trend for left globus pallidus and left striatum within the ASD group. These results confirm earlier reports that RSB is common early in the clinical course of ASD and, furthermore, demonstrate that such behaviors may be associated with decreased volumes of the basal ganglia and thalamus. En ligne : http://dx.doi.org/10.1002/aur.193 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=127 [article] Basal ganglia morphometry and repetitive behavior in young children with autism spectrum disorder [Texte imprimé et/ou numérique] / Annette ESTES, Auteur ; Dennis W.W. SHAW, Auteur ; Bobbi F. SPARKS, Auteur ; Seth D. FRIEDMAN, Auteur ; Jay N. GIEDD, Auteur ; Geraldine DAWSON, Auteur ; Matthew BRYAN, Auteur ; Stephen R. DAGER, Auteur . - 2011 . - p.212-220. Langues : Anglais (eng) in Autism Research > 4-3 (June 2011) . - p.212-220 Mots-clés : neuroimaging  preschoolers  clinical psychology  repetitive behavior  autism spectrum disorders Index. décimale : PER Périodiques Résumé : We investigated repetitive and stereotyped behavior (RSB) and its relationship to morphometric measures of the basal ganglia and thalami in 3- to 4-year-old children with autism spectrum disorder (ASD; n = 77) and developmental delay without autism (DD; n = 34). Children were assessed through clinical evaluation and parent report using RSB-specific scales extracted from the Autism Diagnostic Observation Schedule (ADOS), the Autism Diagnostic Interview, and the Aberrant Behavior Checklist. A subset of children with ASD (n = 45), DD (n = 14), and a group of children with typical development (TD; n = 25) were also assessed by magnetic resonance imaging. Children with ASD demonstrated elevated RSB across all measures compared to children with DD. Enlargement of the left and right striatum, more specifically the left and right putamen, and left caudate, was observed in the ASD compared to the TD group. However, nuclei were not significantly enlarged after controlling for cerebral volume. The DD group, in comparison to the ASD group, demonstrated smaller thalami and basal ganglia regions even when scaled for cerebral volume, with the exception of the left striatum, left putamen, and right putamen. Elevated RSB, as measured by the ADOS, was associated with decreased volumes in several brain regions: left thalamus, right globus pallidus, left and right putamen, right striatum and a trend for left globus pallidus and left striatum within the ASD group. These results confirm earlier reports that RSB is common early in the clinical course of ASD and, furthermore, demonstrate that such behaviors may be associated with decreased volumes of the basal ganglia and thalamus. En ligne : http://dx.doi.org/10.1002/aur.193 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=127

Discrepancies Between Academic Achievement and Intellectual Ability in Higher-Functioning School-Aged Children with Autism Spectrum Disorder / Annette ESTES in Journal of Autism and Developmental Disorders, 41-8 (August 2011)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 41-8 (August 2011) . - p.1044-1052 Titre : Discrepancies Between Academic Achievement and Intellectual Ability in Higher-Functioning School-Aged Children with Autism Spectrum Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Annette ESTES, Auteur ; Vanessa RIVERA, Auteur ; Matthew BRYAN, Auteur ; Philip CALI, Auteur ; Geraldine DAWSON, Auteur Année de publication : 2011 Article en page(s) : p.1044-1052 Langues : Anglais (eng) Mots-clés : Academic achievement  Autism  School-aged  Intellectual ability Index. décimale : PER Périodiques Résumé : Academic achievement patterns and their relationships with intellectual ability, social abilities, and problem behavior are described in a sample of 30 higher-functioning, 9-year-old children with autism spectrum disorder (ASD). Both social abilities and problem behavior have been found to be predictive of academic achievement in typically developing children but this has not been well studied in children with ASD. Participants were tested for academic achievement and intellectual ability at age 9. Problem behaviors were assessed through parent report and social functioning through teacher report at age 6 and 9. Significant discrepancies between children’s actual academic achievement and their expected achievement based on their intellectual ability were found in 27 of 30 (90%) children. Both lower than expected and higher than expected achievement was observed. Children with improved social skills at age 6 demonstrated higher levels of academic achievement, specifically word reading, at age 9. No relationship was found between children’s level of problem behavior and level of academic achievement. These results suggest that the large majority of higher-functioning children with ASD show discrepancies between actual achievement levels and levels predicted by their intellectual ability. In some cases, children are achieving higher than expected, whereas in others, they are achieving lower than expected. Improved social abilities may contribute to academic achievement. Future studies should further explore factors that can promote strong academic achievement, including studies that examine whether intervention to improve social functioning can support academic achievement in children with ASD. En ligne : http://dx.doi.org/10.1007/s10803-010-1127-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=132 [article] Discrepancies Between Academic Achievement and Intellectual Ability in Higher-Functioning School-Aged Children with Autism Spectrum Disorder [Texte imprimé et/ou numérique] / Annette ESTES, Auteur ; Vanessa RIVERA, Auteur ; Matthew BRYAN, Auteur ; Philip CALI, Auteur ; Geraldine DAWSON, Auteur . - 2011 . - p.1044-1052. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 41-8 (August 2011) . - p.1044-1052 Mots-clés : Academic achievement  Autism  School-aged  Intellectual ability Index. décimale : PER Périodiques Résumé : Academic achievement patterns and their relationships with intellectual ability, social abilities, and problem behavior are described in a sample of 30 higher-functioning, 9-year-old children with autism spectrum disorder (ASD). Both social abilities and problem behavior have been found to be predictive of academic achievement in typically developing children but this has not been well studied in children with ASD. Participants were tested for academic achievement and intellectual ability at age 9. Problem behaviors were assessed through parent report and social functioning through teacher report at age 6 and 9. Significant discrepancies between children’s actual academic achievement and their expected achievement based on their intellectual ability were found in 27 of 30 (90%) children. Both lower than expected and higher than expected achievement was observed. Children with improved social skills at age 6 demonstrated higher levels of academic achievement, specifically word reading, at age 9. No relationship was found between children’s level of problem behavior and level of academic achievement. These results suggest that the large majority of higher-functioning children with ASD show discrepancies between actual achievement levels and levels predicted by their intellectual ability. In some cases, children are achieving higher than expected, whereas in others, they are achieving lower than expected. Improved social abilities may contribute to academic achievement. Future studies should further explore factors that can promote strong academic achievement, including studies that examine whether intervention to improve social functioning can support academic achievement in children with ASD. En ligne : http://dx.doi.org/10.1007/s10803-010-1127-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=132

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