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Vanmarcke, Steven; Noens, Ilse; Steyaert, Jean; Wagemans, Johan – Journal of Autism and Developmental Disorders, 2017
While most typically developing (TD) participants have a coarse-to-fine processing style, people with autism spectrum disorder (ASD) seem to be less globally and more locally biased when processing visual information. The stimulus-specific spatial frequency content might be directly relevant to determine this temporal hierarchy of visual…
Descriptors: Autism, Pervasive Developmental Disorders, Visual Perception, Cognitive Processes
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Hadad, Bat-Sheva; Ziv, Yair – Journal of Autism and Developmental Disorders, 2015
We first demonstrated analytic processing in ASD under conditions in which integral processing seems mandatory in TD observers, a pattern that is often taken to indicate a local default processing in ASD. However, this processing bias does not inevitably come at the price of impaired integration skills. Indeed, examining the same group of…
Descriptors: Autism, Pervasive Developmental Disorders, Cognitive Processes, Thinking Skills
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Muth, Anne; Hönekopp, Johannes; Falter, Christine M. – Journal of Autism and Developmental Disorders, 2014
Visuo-spatial skills are believed to be enhanced in autism spectrum disorders (ASDs). This meta-analysis tests the current state of evidence for Figure Disembedding, Block Design, Mental Rotation and Navon tasks in ASD and neurotypicals. Block Design (d = 0.32) and Figure Disembedding (d = 0.26) showed superior performance for ASD with large…
Descriptors: Autism, Spatial Ability, Visual Perception, Meta Analysis
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Pearson, Amy; Marsh, Lauren; Hamilton, Antonia; Ropar, Danielle – Journal of Autism and Developmental Disorders, 2014
Previous research into autism spectrum disorder (ASD) has shown people with autism to be impaired at visual perspective taking. However it is still unclear to what extent the spatial mechanisms underlying this ability contribute to these difficulties. In the current experiment we examine spatial transformations in adults with ASD and typical…
Descriptors: Adults, Autism, Pervasive Developmental Disorders, Spatial Ability
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Chabani, Ellahe; Hommel, Bernhard – Journal of Autism and Developmental Disorders, 2014
Individuals with autism spectrum disorders (ASDs) have been assumed to show evidence of abnormal visuospatial processing, which has been attributed to a failure to integrate local features into coherent global Gestalts and/or to a bias towards local processing. As the available data are based on baseline performance only, which does not provide…
Descriptors: Autism, Pervasive Developmental Disorders, Visual Perception, Spatial Ability
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Sachse, Michael; Schlitt, Sabine; Hainz, Daniela; Ciaramidaro, Angela; Schirman, Shella; Walter, Henrik; Poustka, Fritz; Bolte, Sven; Freitag, Christine M. – Journal of Autism and Developmental Disorders, 2013
This study broadly examines executive (EF) and visuo-motor function in 30 adolescent and adult individuals with high-functioning autism spectrum disorder (ASD) in comparison to 28 controls matched for age, gender, and IQ. ASD individuals showed impaired spatial working memory, whereas planning, cognitive flexibility, and inhibition were spared.…
Descriptors: Autism, Short Term Memory, Naming, Pervasive Developmental Disorders
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Salowitz, Nicole M. G.; Eccarius, Petra; Karst, Jeffrey; Carson, Audrey; Schohl, Kirsten; Stevens, Sheryl; Van Hecke, Amy Vaughan; Scheidt, Robert A. – Journal of Autism and Developmental Disorders, 2013
Thirteen autistic and 14 typically developing children (controls) imitated hand/arm gestures and performed mirror drawing; both tasks assessed ability to reorganize the relationship between spatial goals and the motor commands needed to acquire them. During imitation, children with autism were less accurate than controls in replicating hand shape,…
Descriptors: Autism, Imitation, Cognitive Processes, Pervasive Developmental Disorders
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David, Nicole; Aumann, Carolin; Bewernick, Bettina H.; Santos, Natacha S.; Lehnhardt, Fritz-G.; Vogeley, Kai – Journal of Autism and Developmental Disorders, 2010
Mentalizing refers to making inferences about other people's mental states, whereas visuospatial perspective taking refers to inferring other people's viewpoints. Both abilities seem vital for social functioning; yet, their exact relationship is unclear. We directly compared mentalizing and visuospatial perspective taking in nineteen adults with…
Descriptors: Cues, Asperger Syndrome, Perspective Taking, Inferences
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Cui, Jifang; Gao, Dingguo; Chen, Yinghe; Zou, Xiaobing; Wang, Ya – Journal of Autism and Developmental Disorders, 2010
Using a battery of working memory span tasks and n-back tasks, this study aimed to explore working memory functions in early-school-age children with Asperger's syndrome (AS). Twelve children with AS and 29 healthy children matched on age and IQ were recruited. Results showed: (a) children with AS performed better in digit and word recall tasks,…
Descriptors: Asperger Syndrome, Short Term Memory, Recall (Psychology), Young Children
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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