An adaptation of the "Stages of Sensorimotor Intelligence in the Child" was used in a longitudinal study of the sensorimotor behavior acquisitions of 24 healthy middle-class infants. Rate of behavior acquisition, variability in behavior performance and relationships between subtests were analyzed. Some comparisons with previous studies are…

Two experiments examined problem solving in 16-month-olds' adaptive locomotion (crossing bridges of varying width with/without handrail). Findings indicated that toddlers attempted wide bridges more than narrow ones. Attempts on narrow bridges depended on handrail presence. Toddlers had longer latencies, examined bridge/handrail more closely, and…

Attempts to identify deficits in object knowledge specific to the autistic syndrome. Examines the correspondence between sensorimotor and play behaviors and language in mentally retarded and normal children. Determines whether these correspondences are different for autistic, mentally retarded, and normal children.(Author/AS)