在半凹加工过程中,熟练的读者独立于字母位置编码字母身份(Johnson等人。,2007).在目前的实验中,我们检查了诵读困难读者的正字法半凹处理。具体来说,在边界范式实验中记录了熟练读者和患有阅读障碍的成人读者的眼球运动(Rayner,1975).副凹预览与目标单词相同(例如,近),转置字母预览(例如,Enarly),或替代字母预览(例如,阿卡利)。诵读困难和非诵读困难的读者在无声句子阅读中展示了正字法副凹预览的好处,并且两个阅读组都在副凹上编码了字母身份和字母位置信息。然而,诵读困难的成年人显示,在词汇处理的早期,在半凹预览期间,与熟练的成人阅读相比,单词的起始字母的位置信息被编码的灵活性较差。我们建议阅读障碍的读者不太能够从正确的字母身份信息中受益(即,在字母换位预览中),由于缺乏正字法到语音的直接映射。当前的发现表明,诵读困难的读者在无声句子阅读过程中在中央凹和副凹处理中表现出一致的和诵读困难的特定阅读困难。
During parafoveal processing, skilled readers encode letter identity independently of letter position (Johnson et al., 2007). In the current experiment, we examined orthographic parafoveal processing in readers with dyslexia. Specifically, the eye movements of skilled readers and adult readers with dyslexia were recorded during a boundary paradigm experiment (Rayner, 1975). Parafoveal previews were either identical to the target word (e.g., nearly), a transposed-letter preview (e.g., enarly), or a substituted-letter preview (e.g., acarly). Dyslexic and non-dyslexic readers demonstrated orthographic parafoveal preview benefits during silent sentence reading and both reading groups encoded letter identity and letter position information parafoveally. However, dyslexic adults showed, that very early in lexical processing, during parafoveal preview, the positional information of a word\'s initial letters were encoded less flexibly compared to during skilled adult reading. We suggest that dyslexic readers are less able to benefit from correct letter identity information (i.e., in the letter transposition previews) due to the lack of direct mapping of orthography to phonology. The current findings demonstrate that dyslexic readers show consistent and dyslexic-specific reading difficulties in foveal and parafoveal processing during silent sentence reading.