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Krasileva, Kate E.; Sanders, Stephan J.; Bal, Vanessa Hus – Journal of Autism and Developmental Disorders, 2017
This study assessed the utility of a brief assessment (the Peabody Picture Vocabulary Test-4th Edition; PPVT4) as a proxy for verbal IQ (VIQ) in large-scale studies of autism spectrum disorder (ASD). In a sample of 2,420 proband with ASD, PPVT4:IQ correlations were strong. PPVT4 scores were, on average, 5.46 points higher than VIQ; 79% of children…
Descriptors: Autism, Pervasive Developmental Disorders, Intelligence Tests, Verbal Ability
Goin-Kochel, Robin P.; Mazefsky, Carla A.; Riley, Brien P. – Journal of Autism and Developmental Disorders, 2008
Little evidence supports that siblings with autism exhibit the same behaviors; however, some findings suggest that level of functioning shows familial aggregation. We tested this notion among multiplex families participating with the Autism Genetic Resource Exchange (AGRE) Consortium, using scores on the "Peabody Picture Vocabulary Test-Third…
Descriptors: Siblings, Autism, Adjustment (to Environment), Genetics