单一和双重干扰源对混合型注意缺陷多动障碍儿童干扰控制的影响

目的:探讨单一干扰源和双重干扰源对混合型注意缺陷多动障碍(ADHD)儿童的干扰控制的影响。方法:对25例符合美国精神障碍诊断与统计手册第4版(DSM-IV)诊断标准的门诊混合型ADHD儿童和25名性别、年龄和智力相匹配的对照组儿童,进行图形Stroop测验,通过操纵图片的颜色和形状特征,设置了单一干扰和双重干扰两种条件,比较两组被试的冲突效应量。结果:在单一干扰条件下,ADHD组的冲突效应量显著大于对照组(P0.05),而在双重干扰条件下,两组的冲突效应量差异无统计学意义(P0.05)。结论:本研究提示,在单一干扰源条件下,混合型ADHD儿童表现出干扰控制缺陷,但在双重干扰源条件下,混合型ADHD儿童的干扰控制表现与正常儿童差异不显著。

Effects of single-feature and dual-feature interference on interference control in children with combined type of attention deficit hyperactivity disorder

Objective: To explore the effects of single-feature and dual-feature interference on interference control in children with the combined type of attention deficit hyperactivity disorder(ADHD-C).Methods: Twenty-five children with ADHD-C meeting the Diagnostic and Statistical Manual of Mental Disorders,Fourth Edition(DSM-IV) diagnostic criteria,and 25 normal control group children matched for age,gender and intelligence were tested with the figure judgment Stroop test.They were asked to judge the directions of the images when presented to a pair of images with arrows.Through the control of the color and shape features of pictures,single-feature interference condition and dual-feature interference were set up and the correct rate and response time were analyzed.Results: ADHD group were deficient in single-feature interference condition compared with normal children [(0.15±0.03) vs.(0.01±0.03),P=0.001].No significant difference were observed between ADHD group and control group in dual-feature interference condition [(0.09±0.04) vs.(0.01±0.04),P=0.093].Conclusion: The results suggest that children with ADHD-C show a deficit in interference control under the single-feature interference condition,while has no difference in interference control ability with the normal children under the dual-feature interference condition.