Florida State University, Tallahassee, USA.
J Atten Disord. 2020 Dec;24(14):1977-1988. doi: 10.1177/1087054717733045. Epub 2017 Oct 6.
The purpose of this study was to reexamine the latent structure of ADHD and sluggish cognitive tempo (SCT) due to issues with construct validity. Two proposed changes to the construct include viewing hyperactivity and sluggishness (hypoactivity) as a single continuum of activity level, and viewing inattention as a separate dimension from activity level. Data were collected from 1,398 adults using Amazon's MTurk. A new scale measuring activity level was developed, and scores of were regressed onto scores of using curvilinear regression. The Activity Level scale showed acceptable levels of internal consistency, normality, and unimodality. Curvilinear regression indicates that a quadratic (curvilinear) model accurately explains a small but significant portion of the variance in levels of inattention. Hyperactivity and hypoactivity may be viewed as a continuum, rather than separate disorders. Inattention may have a U-shaped relationship with activity level. Linear analyses may be insufficient and inaccurate for studying ADHD.
这项研究的目的是重新检验 ADHD 和迟钝认知节奏（SCT）的潜在结构，原因是存在结构效度问题。对结构的两个建议性改变包括将多动和迟钝（活动不足）视为单一的活动水平连续统，以及将注意力不集中视为与活动水平分开的维度。数据来自使用亚马逊的 MTurk 的 1398 名成年人。开发了一个新的测量活动水平的量表，使用曲线回归将 量表的分数回归到 量表的分数上。活动水平量表显示出可接受的内部一致性、正态性和单峰性。曲线回归表明，二次（曲线）模型准确地解释了注意力不集中水平的一小部分但显著的方差。多动和活动不足可能被视为一个连续统，而不是单独的障碍。注意力不集中可能与活动水平呈 U 形关系。线性分析可能不足以准确地研究 ADHD。
