Studies of infant motor development in autism spectrum disorder (ASD) have increased in recent years. This article synthesized this literature through meta-analysis to assess (a) whether infant motor ability differs in ASD relative to neurotypical controls; and (b) whether motor ability and communication are related in infants with ASD. Study 1…

When equated on level of maturity, preterm infants were indistinguishable from full-term infants in their rates of response decrement to stimulus repetition and their subsequent response to a novel stimulus. Responsiveness to auditory novelty at four months was a strong predictor of 18-month mental performance for females but not for males. (RH)

Compared the spontaneous leg movements of 10 infants with Down Syndrome to those of nondisabled infants matched for chronological age and motor age. Contrary to expectations, no significant difference was found in the frequency of leg movements between the two groups. However, Down Syndrome subjects demonstrated significantly fewer of the most…

Examined children's developmental trajectories in five domains. Children were assigned to same- or mixed-age child care groups and assessed at 6-month intervals between approximately 32 and 49 months. Children in the two groups differed in their trajectories for communication, cognitive, and motor development but showed similar trajectories for…

Used kinematic measures to compare relative contributions of growing body dimensions, age, and walking experience in walking skill development in 9- to 17-month-olds, kindergartners, and college students. Found that with increased age, size, and experience, children's steps became longer, narrower, straighter, and more consistent, reflecting a…