Hartman Christie A, Willcutt Erik G, Rhee Soo Hyun, Pennington Bruce F
Institute for Behavioral Genetics and Department of Psychology, University of Colorado at Boulder, Boulder, Colorado 80309-0447, USA.
J Abnorm Child Psychol. 2004 Oct;32(5):491-503. doi: 10.1023/b:jacp.0000037779.85211.29.
To test the relation between sluggish cognitive tempo (SCT) and DSM-IV ADHD symptoms, parent and teacher ratings of the 18 DSM-IV ADHD items and five potential SCT items were obtained in a community sample of 8-18 year-old twins that was overselected for ADHD and learning disabilities (n = 296). Confirmatory factor analyses revealed that a three-factor model provided the best fit to the data for both parent and teacher ratings. DSM-IV inattention and hyperactivity-impulsivity symptoms loaded on two factors consistent with the DSM-IV model, and five SCT symptoms loaded primarily on a third factor. The SCT and inattention factors were highly correlated, whereas SCT and hyperactivity-impulsivity were weakly related. Both raters indicated that children meeting symptom criteria for the combined and inattentive subtypes exhibited significantly more SCT symptoms than those meeting symptom criteria for hyperactive-impulsive type and the comparison group without ADHD. Children meeting symptom criteria for the inattentive type exhibited significantly more SCT symptoms than those meeting criteria for the combined type, based on teacher ratings. These results suggest that SCT is an internally consistent construct that is significantly associated with DSM-IV inattention.
为了检验迟缓认知节奏（SCT）与《精神疾病诊断与统计手册》第四版（DSM-IV）中注意缺陷多动障碍（ADHD）症状之间的关系，我们从一个8至18岁双胞胎的社区样本中获取了家长和教师对18项DSM-IV ADHD项目以及5项潜在SCT项目的评分，该样本因ADHD和学习障碍而被过度选取（n = 296）。验证性因素分析表明，一个三因素模型最能拟合家长和教师评分的数据。DSM-IV中的注意力不集中和多动-冲动症状加载在与DSM-IV模型一致的两个因素上，而5项SCT症状主要加载在第三个因素上。SCT因素与注意力不集中因素高度相关，而SCT与多动-冲动因素则弱相关。两位评分者均表示，符合混合型和注意力不集中型亚型症状标准的儿童比符合多动-冲动型症状标准的儿童以及没有ADHD的对照组儿童表现出明显更多的SCT症状。根据教师评分，符合注意力不集中型症状标准的儿童比符合混合型标准的儿童表现出明显更多的SCT症状。这些结果表明，SCT是一个内部一致的结构，与DSM-IV中的注意力不集中显著相关。
