William Syndrome (WS) is a neurodevelopmental disorder (NDD) known for causing impairment in visual-spatial processing. One of the most widely used pediatric intelligence tests, the Wechsler Intelligence Scale of Children, 5th Edition (WISC-V), added the Visual-Spatial Index (VSI), which measures visual-spatial processing (Wechsler, 2014). The VSI has yet to be studied within the WS population. The study utilized a three-group design, including WS, a clinical comparison group of Autism Spectrum Disorders (ASD), and a typically developing (TD) comparative control. The study explored differences in group performance on the VSI. The study also compared group performance on the VSI to a well-established measure of visual-spatial processing, the Beery-Buktenica Developmental Test of Visual-Motor Integration, 6th Edition (Beery-VMI, Beery et al., 2010). Results showed a significant difference (p = .006) in WS group performance on the two tasks (Block Design and Visual Puzzles) which comprise the VSI. Also, the VSI performance in WS was significantly different (p < .0001) than the ASD and TD groups. Finally, group performance on the VSI and Beery-VMI significantly correlated (r = .783). Overall, the VSI and Beery-VMI measured variations in visual-spatial abilities, with group performance patterns yielding similar output on both. Implications of the classification and clinical performance of the VSI and Beery-VMI are discussed.
|School:||The Chicago School of Professional Psychology|
|School Location:||United States -- Illinois|
|Source:||DAI-A 82/9(E), Dissertation Abstracts International|
|Subjects:||Psychology, Developmental psychology, Disability studies|
|Keywords:||Autism Spectrum Disorders, Visual-Spatial Index, Visual-Spatial Processing, Williams Syndrome, Neuro Developmental Disorder|
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