Parafoveal processing efficiency in rapid automatized naming: a comparison between Chinese normal and dyslexic children.

Parafoveal processing efficiency in rapid automatized naming: a comparison between Chinese normal and dyslexic children.
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DOI:
10.1016/j.jecp.2013.01.007
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发表时间:
2013-07
影响因子:
2.6
通讯作者:
Shu H
Shu H
中科院分区:
心理学3区
文献类型:
--
作者:
Yan M;Pan J;Laubrock J;Kliegl R;Shu H

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众所周知,患有诵读困难的儿童在快速自动命名(RAN)方面比正常阅读者慢。这表明阅读困难症患者会遇到局部处理困难,这可能会导致知觉跨度变窄。因此,阅读困难症患者在移除中心凹旁预览时所受到的影响应该比正常读者少。在这里,我们在 RAN 任务中使用了注视相关移动窗口范例来通过实验测试这一预测。结果表明,阅读困难症患者提取的中心凹旁信息比对照组儿童少。我们认为,由于阅读障碍患者将视觉符号转化为语音输出的自动化程度较低,因此更多的注意力资源被招募到中央凹处理,从而导致知觉跨度的缩短。这反过来导致中心凹旁信息的预激活效率较低,因此处理下一个中心凹项目更加困难。
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 pre-activation of parafoveal information and hence more difficult in processing the next foveal item.
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