School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia.
Res Dev Disabil. 2012 Sep-Oct;33(5):1516-22. doi: 10.1016/j.ridd.2012.03.005. Epub 2012 Apr 21.
Children with Developmental Coordination Disorder (DCD) show deficits in the covert orienting of visuospatial attention, suggesting an underlying issue in attentional disengagement and/or inhibitory control. However, an important theoretical issue that remains unclear is whether the pattern of deficits varies with DCD severity. Fifty-one children with moderate DCD (MDCD), 24 children with severe DCD (SDCD), and 38 typically developing (TD) children participated in the study. Their performance was compared on the covert orienting of visuospatial attention task (COVAT), specifically the voluntary control mode. Results showed that the pattern of performance differed between groups. At a short stimulus-response asynchrony (350 ms), the difference in response times for validly and invalidly cued trials was similar for all three groups. However, at the longer SOA (800 ms), both DCD groups continued to show a relative disadvantage for responses that followed invalid cues. This suggests that a deficit in response inhibition and/or attentional disengagement is manifest in children with both moderate and severe DCD. The implications of these findings for theory and treatment are discussed.
患有发展性协调障碍（DCD）的儿童在视觉空间注意力的隐蔽定向方面表现出缺陷，这表明注意力脱离和/或抑制控制存在潜在问题。然而，一个仍不清楚的重要理论问题是，缺陷模式是否随 DCD 严重程度而变化。51 名中度 DCD（MDCD）儿童、24 名重度 DCD（SDCD）儿童和 38 名典型发育（TD）儿童参加了这项研究。他们在视觉空间注意力隐蔽定向任务（COVAT）中的表现，特别是在自愿控制模式方面进行了比较。结果表明，各组之间的表现模式存在差异。在短刺激-反应时距（350 毫秒）下，有效和无效提示试验的反应时差异在所有三组中相似。然而，在较长的 SOA（800 毫秒）下，两个 DCD 组在跟随无效线索的反应中仍然表现出相对劣势。这表明，在中度和重度 DCD 儿童中，反应抑制和/或注意力脱离的缺陷是明显的。讨论了这些发现对理论和治疗的意义。
