To date, studies using cross-sectional methodologies make up a majority of the literature surrounding children with autism spectrum disorders and participation in physical activity and screen time. Longitudinal studies are needed to examine how physical activity and screen time behaviors co-develop for children with and without an autism spectrum…

This study compared the adaptive behaviors of 20 autistic, 20 Down's syndrome, and 20 normal children matched on age equivalent adaptive behavior, gender, race, birth order, family size, and socioeconomic status. The autistic children displayed significant and pervasive deficits in the acquisition of adaptive social skills and greater variability…

Sixteen individuals with autism and sixteen with Down's Syndrome, aged 10-29, were matched for verbal mental age. The groups' scores did not differ on the Vineland Adaptive Behavior Scales. However, the adaptive skills of Down's Syndrome individuals kept pace with mental age, while the skills of autistic subjects did not change. (Author/JDD)