Mean response times, variability, and skew in the responding of ADHD children: a response time distributional approach
Mean response times, variability, and skew in the responding of ADHD children: a response time distributional approach
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DOI：
10.1016/s0001-6918(00)00019-6
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发表时间：
2000-05-01
影响因子：
1.8
通讯作者：
Douglas, VI
中科院分区：
文献类型：
--
作者：
Leth-Steensen, C;Elbaz, ZK;Douglas, VI
在一项有预警的四选一反应时（RT）任务中，获得了注意缺陷/多动障碍混合型（ADHD；n = 17）男孩组以及两组正常对照男孩（年龄匹配组，n = 18；年龄较小组，n = 10）在三种固定预备期条件（2秒、4秒和8秒）下的反应时分布。通过将指数高斯分布模型拟合到个体反应时数据中，得出了分布形状的定量测量值。统计结果表明，ADHD组的分布在尾部大小方面与年龄匹配的对照组分布不同（ADHD男孩的尾部更大），而在前沿位置方面与年龄较小的对照组分布不同（年龄较小的对照组男孩更慢）。受试者工作特征（ROC）结果显示，指数高斯指数成分对ADHD男孩具有高度诊断性。（C）2000年，爱思唯尔科学出版社。版权所有。
Response time (RT) distributions from three fixed foreperiod conditions (2, 4, and 8 s) in a warned four-choice RT task were obtained for a group of boys with attention-deficit/hyperactivity disorder, combined type (ADHD; n = 17) and for two groups of normal control boys (age-matched, n = 18, and younger-aged, n = 10). Quantitative measures of distributional shape were derived by fitting the ex-Gaussian distributional model to the individual RT data. Statistical results indicate that the ADHD distributions differ from the age-matched control distributions with respect to the size of the tail (larger for the ADHD boys), but differ from the younger control distributions with respect to the location of the leading edge (slower for the younger control boys). Receiver operating characteristic (ROC) results reveal that the ex-Gaussian exponential component is highly diagnostic of the ADHD boys. (C) 2000 Elsevier Science B.V. All rights reserved.