Wilmut Kate, Brown Janice H, Wann John P
School of Psychology, University of Reading, Berkshire, UK.
Disabil Rehabil. 2007 Jan 15;29(1):47-55. doi: 10.1080/09638280600947765.
Previous research has shown that children with Developmental Coordination Disorder (DCD) have poorly developed strategies for allocating attention. This study examines the allocation of attention and integration of visuo-spatial and motor systems in children with DCD in a motor (look+hit condition) and a motor-free (look condition) task.
Three groups of control children were used to compare the performance of a group of children with DCD. Children were seated in front of a central fixation point and six peripheral targets, and were asked to look at or hit targets when illuminated. Saccade/hand movement latencies were measured on gap trials (gap between fixation offset and target onset) and overlap trials (fixation offset and target onset overlapped).
DCD children were not slower than controls to disengage attention during the look condition. However, during the look+hit condition the DCD children showed a prolonged disengagement period, which was also seen in younger control children.
The results suggest that DCD children may have deficits in the allocation of attention for action, in both the speed of onset of a movement and the accuracy of the movement. It is concluded that attention disengagement may contribute to problems of visuo-motor integration in DCD.
先前的研究表明，患有发育性协调障碍（DCD）的儿童在注意力分配方面的策略发展不完善。本研究考察了患有DCD的儿童在一项运动任务（看+击打条件）和一项无运动任务（看条件）中注意力的分配以及视觉空间和运动系统的整合情况。
使用三组对照儿童来比较一组患有DCD的儿童的表现。儿童坐在一个中央固定点和六个周边目标物前，被要求在目标物亮起时看向或击打目标物。在间隙试验（固定点偏移和目标物出现之间的间隙）和重叠试验（固定点偏移和目标物出现重叠）中测量扫视/手部运动潜伏期。
在“看”条件下，患有DCD的儿童在注意力脱离方面并不比对照组儿童慢。然而，在“看+击打”条件下，患有DCD的儿童表现出注意力脱离期延长，这在年龄较小的对照儿童中也有出现。
结果表明，患有DCD的儿童在为行动分配注意力方面可能存在缺陷，无论是在运动开始的速度还是运动的准确性方面。得出的结论是，注意力脱离可能导致DCD中视觉运动整合的问题。
