Investigated whether there exists a stage of development at which "imagery-inducing motor activity" ceases to be facilitative relative to the effectiveness of alternative kinds of associative-learning strategies. (Author/SDH)

Measures the degree of interdependence in timing between infants' right and left arm movements and between movements of both arms and the onsets of stressed vowels in tape-recorded infant-appropriate speech. (HOD)

Using a yoked control procedure, kindergarteners either produced or observed interactions between pairs of toys. Children who performed rather than observed remembered the pairings over time. (ST)

The present study, based on teachers' ratings of their 4- and 5-year-old students, examined the correspondence between quantity and sophistication of verbal output and the child's production of gross bodily activity and fine manipulative movements. (Authors)

A battery of four tasks which measure the interhemispheric transfer of information was utilized to test the hypothesis that there will be an increase in efficiency of interhemispheric transfer with increasing age. (MP)

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…

Argues that motor and cognitive development may be fundamentally interrelated. Summarizes evidence of close co-activation of the neocerebellum and dorsolateral prefrontal cortex in functional neuroimaging, similarities in the cognitive sequelae of damage to dorsolateral prefrontal cortex and the neocerebellum, motor deficits in…

Factor structures of various eye-hand coordination tasks were examined for children, ages 4-1/2 to 8-1/2. Theoretical models of skilled action development are discussed. (ST)

Results were interpreted as suggesting that sociocultural factors may change the rate of development but not its course. (Author/JMB)

Examines the effect of changes in the social and motor capabilities of infants on their daily social encounters. Home observations were made of the social interactions of 14 infants and their mothers when the infants were 6, 8, and 12 months of age. (CM)

Fourteen five- and nine-month-old infants were presented with illuminated toys to reach for in total darkness. In half the trials, a luminescent marker was attached to the reaching hand. The nine-month olds reached just as accurately with or without the hand marker, whereas five-month olds were generally inaccurate and unaffected by the marker.…

Using a dynamic systems approach, examined the development of intralimb coordination over the first year of independent walking in three infants. Found that, in the first month of walking, there was much instability between the thigh and shank of the leg, but after three months infants appeared to have found an adult-like stable coordinative…

Examined organization of 5.5, 8.5, and 11.5-month-olds' reaching skill for stationary and moving targets. Found that infants of all ages made anticipatory adjustments of hand alignment; effectiveness of these adjustments improved with age. Regardless of age, infants used dynamic information from spinning and oscillating targets to update ongoing…

Examined infants' ability to retrieve an object from atop a slightly larger object. Found that even 5-month-olds could retrieve objects close in size and fully contiguous with their bases when demands on reaching skill were reduced. Proposed that when they fail this task, it is because they lack the skill to reach the top object without…