Department of Psychology, University of Potsdam, 14476 Potsdam, Germany.
J Exp Child Psychol. 2013 Jul;115(3):579-89. doi: 10.1016/j.jecp.2013.01.007. Epub 2013 Mar 15.
Dyslexic children are known to be slower than normal readers in rapid automatized naming (RAN). This suggests that dyslexics encounter local processing difficulties, which presumably induce a narrower perceptual span. Consequently, dyslexics should suffer less than normal readers from removing parafoveal preview. Here we used a gaze-contingent moving window paradigm in a RAN task to experimentally test this prediction. Results indicate that dyslexics extract less parafoveal information than control children. We propose that more attentional resources are recruited to the foveal processing because of dyslexics' less automatized translation of visual symbols into phonological output, thereby causing a reduction of the perceptual span. This in turn leads to less efficient preactivation of parafoveal information and, hence, more difficulty in processing the next foveal item.
诵读困难儿童在快速自动命名（RAN）中比正常阅读者慢。这表明诵读困难者遇到了局部加工困难，这可能导致感知范围变窄。因此，与正常阅读者相比，诵读困难者受去除视上预视的影响应该更小。在这里，我们在 RAN 任务中使用了注视相关的移动窗口范式来实验性地检验这一预测。结果表明，诵读困难者比对照组儿童提取的视上预视信息更少。我们提出，由于诵读困难者的视觉符号到语音输出的转换自动化程度较低，需要更多的注意力资源来进行注视加工，从而导致感知范围缩小。这反过来又导致对视上预视信息的预激活效率降低，因此在下一个注视点项目的处理上更加困难。
