ADHD Clinic, Children's and Women's Health Centre, Vancouver, British Columbia, Canada.
J Atten Disord. 2012 Nov;16(8):635-44. doi: 10.1177/1087054711416310. Epub 2011 Nov 10.
To examine factor structures of Diagnostic and Statistical Manual of Mental Disorders (4th ed.) symptoms of ADHD in adults.
Two sets of models were tested: (a) models with inattention and hyperactivity/impulsivity as separate but correlated latent constructs and (b) hierarchical general factor models with a general factor for all symptoms and separate specific factors for inattention and hyperactivity/impulsivity. Participants were 751 adults with ADHD. Two models with correlated factors and two general factor models of ADHD symptoms were tested.
The general factor model provided a better fit of the data than the correlated models. The general factor model with one general and three (inattention, motoric, and verbal hyperactivity/impulsivity) specific factors best accounted for the adults' symptoms.
These results suggest a unitary component to ADHD symptoms as well as dimensional specific factors. The replication of a general factor in adults suggests continuity of symptom presentation from childhood into adulthood. Clinical implications are discussed.
研究成人注意缺陷多动障碍（ADHD）诊断与统计手册（第 4 版）症状的因素结构。
检验了两组模型：（a）将注意力不集中和多动/冲动分别作为两个相互关联的潜在因素的模型；（b）所有症状的一般因素和注意力不集中、多动/冲动的特定因素的层次总因素模型。参与者为 751 名患有 ADHD 的成年人。检验了两个具有关联因素的模型和两个 ADHD 症状的总因素模型。
一般因素模型比关联模型更能拟合数据。具有一个一般因素和三个（注意力不集中、运动和言语多动/冲动）特定因素的一般因素模型最好地解释了成年人的症状。
这些结果表明 ADHD 症状具有单一的组成部分和维度特异性因素。在成年人中复制出的一般因素表明，症状表现从儿童期延续到成年期。讨论了临床意义。
