Cognitive Neuroscience Research Group, Institute for Biotechnology and Bioengineering, Centre for Molecular and Structural Biomedicine, University of Algarve, Faro, Portugal.
Dyslexia. 2011 Aug;17(3):242-55. doi: 10.1002/dys.433.
The current study investigated which time components of rapid automatized naming (RAN) predict group differences between dyslexic and non-dyslexic readers (matched for age and reading level), and how these components relate to different reading measures. Subjects performed two RAN tasks (letters and objects), and data were analyzed through a response time analysis. Our results demonstrated that impaired RAN performance in dyslexic readers mainly stem from enhanced inter-item pause times and not from difficulties at the level of post-access motor production (expressed as articulation rates). Moreover, inter-item pause times account for a significant proportion of variance in reading ability in addition to the effect of phonological awareness in the dyslexic group. This suggests that non-phonological factors may lie at the root of the association between RAN inter-item pauses and reading ability. In normal readers, RAN performance was associated with reading ability only at early ages (i.e. in the reading-matched controls), and again it was the RAN inter-item pause times that explain the association.
本研究旨在探讨快速自动命名（RAN）的哪些时间成分可以预测阅读障碍者和非阅读障碍者（按年龄和阅读水平匹配）之间的群体差异，以及这些成分与不同阅读测量指标的关系。被试者完成了两个 RAN 任务（字母和物体），并通过反应时分析对数据进行了分析。我们的结果表明，阅读障碍者的 RAN 表现受损主要源于项目间停顿时间的延长，而不是在访问后的运动产出水平上存在困难（表现为发音速度）。此外，在阅读障碍组中，除了语音意识的影响外，项目间停顿时间还可以解释阅读能力的很大一部分差异。这表明，非语音因素可能是 RAN 项目间停顿时间与阅读能力之间关联的根源。在正常读者中，RAN 表现仅与早期的阅读能力相关（即在阅读匹配的对照组中），并且仍然是 RAN 项目间停顿时间解释了这种关联。
