Statistically characterizing intra- and inter-individual variability in children with Developmental Coordination Disorder.
Statistically characterizing intra- and inter-individual variability in children with Developmental Coordination Disorder.
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DOI：
10.1016/j.ridd.2010.12.043
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发表时间：
2011-07
影响因子：
3.1
通讯作者：
Clark JE
中科院分区：
文献类型：
--
作者：
King BR;Harring JR;Oliveira MA;Clark JE
以往对发育协调障碍(DCD)儿童的研究一直报告说，在运动技能表现中，个体内和个体间的变异性增加。统计地描述这种变异性不仅对行为数据的分析和解释至关重要，而且可能有助于我们理解DCD背后的过程。因此，这项研究的主要目的是证明一种灵活的统计技术的实用性，即随机系数模型(RCM)，该模型表征了患有和不患有DCD的儿童个体内和个体间变异性的增加。我们分析了一项感觉运动适应任务的数据，在该任务中，参与者在旋转的视觉反馈条件下执行离散的瞄准动作。为了突出这种统计方法的优势，我们将RCM的结果与传统使用的一般线性模型(GLM)的结果进行了对比。RCM揭示了两组儿童之间的差异，而GLM没有发现这些差异；并描述了每个人的变化轨迹。RCM为研究人员提供了在个体水平上探索行为缺陷的机会，并可能为DCD儿童的行为异质性提供新的见解。
Previous research investigating children with Developmental Coordination Disorder (DCD) has consistently reported increased intra- and inter-individual variability during motor skill performance. Statistically characterizing this variability is not only critical for the analysis and interpretation of behavioral data, but may facilitate our understanding of the processes underlying DCD. Thus, the primary purpose of this research was to demonstrate the utility of a flexible statistical technique, a random coefficient model (RCM), that characterizes the increased intra- and inter-individual variability in children with and without DCD. We analyzed data from a sensorimotor adaptation task during which participants executed discrete aiming movements under conditions of rotated visual feedback. To highlight the advantages of this statistical approach, we contrasted the results from the RCM with those from a traditionally employed general linear model (GLM). The RCM revealed differences between the two groups of children that the GLM did not detect; and, characterized trajectories of change for each individual. The RCM provides researchers an opportunity to probe behavioral deficits at the individual level and may provide new insights into the behavioral heterogeneity in children with DCD.
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影响因子：
2
作者：
Contreras-Vidal, J;Bo, J;Clark, JE
通讯作者：
Clark, JE
影响因子：
2.5
作者：
Joiner, Wilsaan M.;Smith, Maurice A.
通讯作者：
Smith, Maurice A.
影响因子：
2.5
作者：
King, Bradley R.;Kagerer, Florian A.;Clark, Jane E.
通讯作者：
Clark, Jane E.
影响因子：
2.1
作者：
Kagerer, F. A.;Contreras-Vidal, J. L.;Clark, J. E.
通讯作者：
Clark, J. E.
影响因子：
2.5
作者：
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通讯作者：
Glickstein, M