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Intra-Individual Variability Among Children with ADHD on a Working Memory Task: An Ex-Gaussian Approach

机译：多动症儿童在工作记忆任务中的个体内变异：前高斯方法

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摘要

Intra-individual variability on a computer-based working memory task was examined among 25 children/adolescents with ADHD and 24 typically developing peers. Participants completed the Visual Serial Addition Task (VSAT) and reaction time data were fit to an ex-Gaussian distribution. ADHD participants demonstrated significantly more variable performance than controls, and effects of working memory load were observed. Event rate, however, had no influence on group differences in performance. Follow-up correlations revealed associations between VSAT performance and ADHD symptomatology. This study supports intra-individual variability as a hallmark feature of ADHD beyond the domain of response inhibition and reinforces the need to consider variability in ADHD more broadly.
机译：在25名患有ADHD的儿童/青少年和24名典型的发育中的同龄人中，研究了基于计算机的工作记忆任务的个体内变异性。参与者完成了视觉序列加法任务（VSAT），反应时间数据符合前高斯分布。多动症参与者表现出比对照组明显更多的可变性能，并且观察到工作记忆负荷的影响。但是，事件发生率对小组的表现差异没有影响。随访相关性揭示了VSAT表现与ADHD症状之间的关联。这项研究支持将个体内变异性作为ADHD的标志性特征，超越了反应抑制范围，并强调了更广泛地考虑ADHD变异性的需求。

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  • 来源
    《Child Neuropsychology》 |2009年第5期|441-459|共19页
  • 作者

    Wendy M. Buzy; Deborah R. Medoff; Julie B. Schweitzer;

  • 作者单位

    Division of Child and Adolescent Psychiatry, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA;

    Division of Services Research, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, Maryland, USA;

    M.I.N.D. Institute & Department of Psychiatry and Behavioral Sciences, University of California-Davis, California, USA;

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  • 正文语种 eng
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  • 关键词

    ADHD; Working memory; Reaction time; Variability;

    机译：多动症;工作记忆;反应时间;变化性;

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