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Sahyoun, Cherif P.; Soulieres, Isabelle; Belliveau, John W.; Mottron, Laurent; Mody, Maria – Journal of Autism and Developmental Disorders, 2009
We investigated linguistic and visuospatial processing during pictorial reasoning in high-functioning autism (HFA), Asperger's syndrome (ASP), and age and IQ-matched typically developing participants (CTRL), using three conditions designed to differentially engage linguistic mediation or visuospatial processing (visuospatial, V; semantic, S;…
Descriptors: Reaction Time, Semantics, Autism, Asperger Syndrome
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Nazarali, Natasha; Glazebrook, Cheryl M.; Elliott, Digby – Journal of Autism and Developmental Disorders, 2009
Two experiments explored how individuals with and without autism plan and reprogram movements. Participants were given partial or complete information regarding the location of the upcoming manual movement. In Experiment 1, direct information specified the hand or direction of the upcoming movement. These results replicated previous reports that…
Descriptors: Autism, Psychomotor Skills, Comparative Analysis, Motion
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Kuschner, Emily S.; Bennetto, Loisa; Yost, Kelley – Journal of Autism and Developmental Disorders, 2007
Previous research demonstrates an uneven pattern of cognitive abilities in children with autism spectrum disorders (ASDs). This study examined whether this uneven pattern exists within the nonverbal domain in young children. We hypothesized relative strengths in perceptual abilities and weaknesses in nonverbal conceptual abilities in preschoolers…
Descriptors: Concept Formation, Cognitive Ability, Young Children, Developmental Delays
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Schlooz, Wim A. J. M.; Hulstijn, Wouter; van den Broek, Pieter J. A.; van der Pijll, Angela C. A. M.; Gabreels, Fons; van der Gaag, Rutger J.; Rotteveel, Jan J. – Journal of Autism and Developmental Disorders, 2006
Children diagnosed with Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) and Asperger Syndrome (AS) may be characterised by a similar perceptual focus on details as children with autistic disorder (AD). This was tested by analysing their performance in a visuoperceptual task [the Children's Embedded Figure Test (CEFT)] and a…
Descriptors: Asperger Syndrome, Autism, Spatial Ability, Visual Perception
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Goldberg, M. C.; Mostofsky, S. H.; Cutting, L. E.; Mahone, E. M.; Astor, B. C.; Denckla, M. B.; Landa, R. J. – Journal of Autism and Developmental Disorders, 2005
Background: The executive functions of inhibition, planning, flexible shifting of actions, and working memory are commonly reported to be impaired in neurodevelopmental disorders. Method: We compared these abilities in children (8?12 years) with high functioning autism (HFA, n = 17), attention deficit-hyperactivity disorder (ADHD, n = 21) and…
Descriptors: Children, Autism, Attention Deficit Disorders, Hyperactivity
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Landa, Rebecca J.; Goldberg, Melissa C. – Journal of Autism and Developmental Disorders, 2005
This study examined language and executive functions (EF) in high-functioning school-aged individuals with autism and individually matched controls. Relationships between executive, language, and social functioning were also examined. Participants with autism exhibited difficulty on measures of expressive grammar, figurative language, planning,…
Descriptors: Language Skills, Interpersonal Competence, Autism, Grammar
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Wainwright-Sharp, J. Ann; Bryson, Susan E. – Journal of Autism and Developmental Disorders, 1993
A visual orienting task was given to 11 high functioning male adolescents and adults with autism. Findings suggested that autistic people have difficulty processing briefly presented cue information and problems disengaging and shifting attention within the visual modality. Results support previous ideas that attentional dysfunction may underlie…
Descriptors: Adolescents, Adults, Attention Control, Attention Deficit Disorders
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Ohta, Masataka – Journal of Autism and Developmental Disorders, 1987
Analysis of the conceptions of spatial relations, size comparisons, and gesture imitations of 16 autistic children (ages 6-14 years) with IQs over 70 indicated an inability to acquire concepts of size comparison and spatial relationships through verbal instructions, suggesting a cognitive deficit of impaired symbolic-representational functioning.…
Descriptors: Autism, Children, Cognitive Processes, Concept Formation
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