Tucha O, Lange K W
Department of Neuropsychology, University Regensburg, Germany.
J Abnorm Child Psychol. 2001 Aug;29(4):351-6. doi: 10.1023/a:1010366014095.
Poor handwriting in hyperactive children often contributes to academic failure. Beneficial effects of methylphenidate on the quality of handwriting have been shown. Using a digitizing tablet, the handwriting of 21 hyperactive boys was examined both during methylphenidate treatment and following withdrawal of the drug. Half of the hyperactive boys were tested first on methylphenidate and then following withdrawal of the drug and the remaining hyperactive boys were examined in the reverse order. Twenty-one control boys underwent the same examination. Velocity and acceleration of handwriting movements were measured. Furthermore, every writing specimen was independently rated by four examiners regarding the quality of handwriting. Following withdrawal of the drug, the quality of handwriting specimens of hyperactive boys was poorer than during treatment with methylphenidate. Statistical comparison of writing movements of hyperactive boys on and off methylphenidate revealed that the medication resulted in a deterioration in handwriting fluency. The results showed that following withdrawal of medication, hyperactive children did not differ from control boys in handwriting movements. The improvement in hyperactive behavior through methylphenidate was associated with increased legibility and greater accuracy of handwriting. The intention to write neatly may interfere with the fluent writing process.
多动儿童书写不佳往往导致学业成绩不佳。已证明哌甲酯对手写质量有有益影响。使用数位板，对21名多动男孩在哌甲酯治疗期间及停药后进行了笔迹检查。一半多动男孩先在哌甲酯治疗时接受测试，然后在停药后测试，其余多动男孩则按相反顺序检查。21名对照男孩接受了相同检查。测量了书写动作的速度和加速度。此外，四位考官对每份书写样本的书写质量进行独立评分。停药后，多动男孩的书写样本质量比哌甲酯治疗期间差。对多动男孩服用和未服用哌甲酯时的书写动作进行统计比较发现，药物导致书写流畅性变差。结果显示，停药后，多动儿童在书写动作方面与对照男孩没有差异。通过哌甲酯改善多动行为与书写清晰度提高和准确性增强有关。想要写得工整的意图可能会干扰流畅的书写过程。
