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题名:	The ex-Gaussian distribution of reaction times in adolescents with attention-deficit/hyperactivity disorder
作者:	許文耀 Hsu, Wen-Yau Shoou-Lian Hwang Gu Gau, Susan Shur-Fen Tzang, Shyh-Weir
贡献者:	心理系
关键词:	ADHD;Reaction time variability;Ex-Gaussian distribution;Effort allocation;Cognitive-energetic model
日期:	2013-11
上传时间:	2014-04-24 16:56:13 (UTC+8)
摘要:	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.
關聯:	Research in Developmenta Disabilities, 34(11),3709-3719
数据类型:	article
DOI 連結:	http://dx.doi.org/10.1016/j.ridd.2013.07.025
DOI:	10.1016/j.ridd.2013.07.025
显示于类别:	[心理學系] 期刊論文

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