Brief Report: Adaptive Behavior and Cognitive Skills for Toddlers on the Autism Spectrum
This study examined adaptive behavior and cognitive skills for 125 toddlers on the autism spectrum using the recently updated Vineland-II and Bayley-III. Delays in adaptive skills were apparent at 2 years of age. As a group, toddlers on the autism spectrum had a profile of Vineland-II standard scores in which Motor Skills > Daily Living Skills > Socialization > Communication. Vineland-II scores were significantly correlated with Bayley-III Cognitive scores. Performance on the ADOS was significantly negatively correlated with Bayley-III Cognitive standard scores and standard scores in the Daily Living Skills and Communication domains of the Vineland-II. However, calibrated ADOS scores did not contribute significant variance to Vineland-II scores beyond that predicted by age and Bayley-III scores.
KeywordsAutism Adaptive behavior Vineland Cognitive skills Bayley
This research was supported by funding from the National Institutes of Health, NIDCD R01 DC007223 (S. Ellis Weismer, PI & M.A. Gernsbacher, Co-PI). Preliminary data from this study were presented in a poster at the International Meeting for Autism Research in Chicago, IL in May 2009.
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