The effects of keyguard use and pelvic positioning (neutral versus posterior tilt) on typing proficiency was studied in an 8-year-old boy with athetoid and spastic cerebral palsy. Speed and accuracy were measured with the Mastertype computer software program (Zweig, 1984). The results showed that the use of a keyguard increased the subject's typing accuracy and decreased his speed. Neither neutral nor posterior pelvic positioning appeared to have a significant effect on typing speed or on accuracy.
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Diane J. McCormack (1990) studied this question.
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