【摘要】 目的 探讨数学不良(MD)儿童的精细运动控制功能。方法 取小学生58名，30名为MD儿童，28名为数优儿童，用数码写字板测试两者书写横线的速度、加速度。结果 ①两者在自然条件下书写横线的速度、加速度非常一致。②两者在无视觉反馈条件下书写横线的速度基本一致，但是结束阶段的加速度数优儿童的是减速，MD儿童的是加速，两者的差异非常显著。结论 ①自然条件书写，两者的开环精细运动控制功能相同。②无视觉反馈条件书写，MD儿童的精细运动控制功能降低。

    【关键词】 精细运动控制功能；数码写字板；数学不良儿童

    Fine Motor Control Functions of Children with Mathematical Disabilities. Xu Jinmin, Zheng Xifu, Gong Huoliang, et al. Department of Psychology, South China Normal University, Guangzhou 510631, P.R.China

    【Abstract】 Objective To explore the fine motor control functions of children with mathematical disabilities. Methods 30 MD children and 28 good at mathematics peers were collected, a digitizing tablet was used to record the handwriting movements' velocity and acceleration. Results ①Writing a horizontal line under spontaneous condition, the velocity and acceleration values of MD children are the same with those of their peers. ②Writing a horizontal line under no-visual feedback condition, the velocity values of the MD children are basically the same with those of their peers, but the end-acceleration values are significantly different from that of their peers, and the talented ones are of deceleration, the MD ones are of acceleration. Conclusion ①MD children and their peers have the same open-loop fine motor control functions under spontaneous condition. ②MD children decrease their fine motor control functions under no-visual feedback condition. ......