其他摘要：With the present study, w e aimed to investigate the task complexity effects on the performance of a coincidence timing task in individuals with Down syndrome. The experimental group was consisted by 26 subjects with Down syndrome, 20 years old ( ± 5), and classified as mild or mode rate in International Classification of Functioning and Health. Each participant in the experimental group was matched by in function of gender a nd age with a participant in a control group without Down syndrome. Both groups performed a coincident timing t ask, in which the participant had different levels of structural and functional complexity. Performance measure was derived from the consistency (absolute error), accuracy (variable error) and direction of response (constant error). Individuals with Down s yndrome presented spatiotemporal organization impairment s related to the difficulty in dealing with motor demand in order to interact with the perceptive demand. They also experienced difficulty in adapt to task complexity, causing performance error in the task. Individuals with Down syndrome have deficits in perceptive and space - time organization, and this phenomenon may be explained by the difficulty in integrating perceptive stimulus to motor actions with a high number of elements involved.
其他关键词：Complexity; Coincidence Timing; Down syndrome.
