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    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/65109


    Title: The ex-Gaussian distribution of reaction times in adolescents with attention-deficit/hyperactivity disorder
    Authors: Shoou-Lian Hwang Gu;Susan Shur-Fen Gau;Shyh-Weir Tzang;Wen-Yau Hsu
    Contributors: 財務金融學系
    Keywords: ADHD;Reaction time variability;Ex-Gaussian distribution;Effort allocation;Cognitive-energetic model
    Date: 2013-11
    Issue Date: 2013-12-06 06:51:52 (UTC+0)
    Abstract: We investigated the three parameters (mu, sigma, tau) of ex-Gaussian distribution of RT derived from the Conners’ continuous performance test (CCPT) and examined the moderating effects of the energetic factors (the inter-stimulus intervals (ISIs) and Blocks) among these three parameters, especially tau, an index describing the positive skew of RT distribution. We assessed 195 adolescents with DSM-IV ADHD, and 90 typically developing (TD) adolescents, aged 10–16. Participants and their parents received psychiatric interviews to confirm the diagnosis of ADHD and other psychiatric disorders. Participants also received intelligence (WISC-III) and CCPT assessments. We found that participants with ADHD had a smaller mu, and larger tau. As the ISI/Block increased, the magnitude of group difference in tau increased. Among the three ex-Gaussian parameters, tau was positively associated with omission errors, and mu was negatively associated with commission errors. The moderating effects of ISIs and Blocks on tau parameters suggested that the ex-Gaussian parameters could offer more information about the attention state in vigilance task, especially in ADHD.
    Relation: RESEARCH IN DEVELOPMENTAL DISABILITIES,34(11),3709–3719.
    Appears in Collections:[Department of Finance] Journal Article

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