Hanley J R, Kay J
Department of Psychology, University of Liverpool, U.K.
Neuropsychologia. 1996 Dec;34(12):1165-74. doi: 10.1016/0028-3932(96)00039-5.
This study investigated possible causes of differences in reading speed between two alexic patients who read words letter by letter. As both patients appeared to rely on serial left-to-right processing of letters within words, the difference in reading speed did not seem to be related to any differences in the extent to which the patients could recognize letters in words in parallel or 'ends-in'. Differences in reading speed also seemed to be unrelated to the patients ability to identify individual letters since their letter recognition accuracy was very similar. Furthermore, although patient PD was significantly slower at reading words aloud than patient DC, PD was in fact significantly quicker than DC on a test that has previously been used to assess letter recognition skills in letter-by-letter readers. It is therefore concluded that PD reads words more slowly because of an additional impairment at the level of the word form system. The results therefore reinforce the distinction between Type 1 and Type 2 letter-by-letter readers that was first drawn by Patterson and Kay.
本研究调查了两名逐字母阅读的失读症患者阅读速度存在差异的可能原因。由于两名患者似乎都依赖于单词内字母从左到右的串行处理，阅读速度的差异似乎与患者并行识别单词中字母的程度或“词尾识别”的任何差异无关。阅读速度的差异似乎也与患者识别单个字母的能力无关，因为他们的字母识别准确率非常相似。此外，虽然患者PD大声朗读单词的速度明显比患者DC慢，但在之前用于评估逐字母阅读者字母识别技能的测试中，PD实际上比DC快得多。因此得出结论，PD阅读单词更慢是因为单词形式系统层面存在额外的损伤。因此，研究结果强化了帕特森和凯首次提出的1型和2型逐字母阅读者之间的区别。
