RELATION BETWEEN SYNCHRONIZED AND SELF-PACED RESPONSE IN PRESCHOOLERSRHYTHMIC MOVEMENT

Regulation of the rhythmic movement of 29 preschoolers ages 3 to 6 yea rs was studied in connection with self-paced response. An Auditory Pul se condition presented the pulse audibly, a Visual Pulse condition pre sented the pulse visibly, and a Moving Visual Target condition present ed the repetitive movement of a visual target. We used a Quick Tempo c ondition in which the interstimulus interval was slightly different fr om the average self-paced tapping rate at which each subject felt comf ortable, and a Slow Tempo in which the interval was considerably diffe rent. The error in the interresponse interval of tapping, i.e., the li me gap between the mean interresponse and interstimulus intervals, was calculated as an indicator of regulation. The error in the former dec reased across age groups only in the Slow Tempo condition. In the Slow -Tempo Visual-Pulse condition in which the error in the interresponse interval was particularly large, the younger subjects tended to respon d al a rate near the self-paced response. In both tempos, the error in the interresponse interval in the Moving Visual Target condition was much the same as in the Auditory Pulse condition and was statistically smaller than in the Visual Pulse condition. These results may suggest that one of the important factors in the development of preschoolers' synchronization with physical rhythm is an ability to modify or restr ain the self-paced response and that additional information from movem ent of the visual target could assist them externally in regulating mo vement.