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Gross Motor Development, Movement Abnormalities, And Early Identification Of Autism, Sally Ozonoff, Gregory S. Young, Stacy Goldring, Laura Greiss Hess, Andriana M. Herrera, Joel Steele, Suzanne Macari, Susan Hepburn, Sally J. Rogers

Laura Greiss Hess

Gross motor development (supine, prone, rolling, sitting, crawling, walking) and movement abnormalities were examined in the home videos of infants later diagnosed with autism (regression and no regression subgroups), developmental delays (DD), or typical development. Group differences in maturity were found for walking, prone, and supine, with the DD and Autism-No Regression groups both showing later developing motor maturity than typical children. The only statistically significant differences in movement abnormalities were in the DD group; the two autism groups did not differ from the typical group in rates of movement abnormalities or lack of protective responses. These findings do not …