Jones Manon W, Branigan Holly P, Kelly M Louise
Department of Psychology, School of Philosophy, Psychology, and Language Sciences, University of Edinburgh, Edinburgh, UK.
Dyslexia. 2008 May;14(2):95-115. doi: 10.1002/dys.345.
Developmental dyslexia is often characterized by a visual deficit, but the nature of this impairment and how it relates to reading ability is disputed (Brain 2003; 126: 841-865). In order to investigate this issue, we compared groups of adults with and without dyslexia on the Ternus, visual-search and symbols tasks. Dyslexic readers yielded more errors on the visual-search and symbols tasks compared with non-dyslexic readers. A positive correlation between visual-search and symbols task performance suggests a common mechanism shared by these tasks. Performance on the visual-search and symbols tasks also correlated with non-word reading and rapid automatized naming measures, and visual search contributed independent variance to non-word reading. The Ternus task did not discriminate reading groups nor contributed significant variance to reading measures. We consider how visual-attention processes might underlie specific component reading measures.
发育性阅读障碍通常以视觉缺陷为特征，但这种损伤的本质及其与阅读能力的关系存在争议（《大脑》，2003年；126卷：841 - 865页）。为了研究这个问题，我们在特尔努斯任务、视觉搜索任务和符号任务上对有阅读障碍和无阅读障碍的成年人群体进行了比较。与无阅读障碍的读者相比，有阅读障碍的读者在视觉搜索任务和符号任务上产生了更多错误。视觉搜索任务和符号任务的表现之间呈正相关，这表明这些任务共享一种共同机制。视觉搜索任务和符号任务的表现也与非单词阅读及快速自动命名测量相关，并且视觉搜索对非单词阅读有独立的方差贡献。特尔努斯任务未能区分阅读组，对阅读测量也没有显著的方差贡献。我们思考视觉注意过程可能如何构成特定的阅读成分测量的基础。
