Abstract The present study investigated responsiveness to intervention in children with an earlier versus later diagnosis of dyslexia. We examined differences between second (n = 122; early diagnosis) and third (n = 158; late diagnosis) graders with dyslexia on reading and spelling abilities before, during and after a dyslexia intervention as well as in precursor measures. Scores were also compared with those of typical reading peers at second (n = 108) and third (n = 119) grade. Finally, we examined the role of second versus third grade diagnosis in the prediction of variation in responsiveness to intervention. Before the intervention, the early diagnosed group was behind the late diagnosed group on almost all measures. During the intervention, the earlier diagnosed group made more progress on word decoding accuracy and showed comparable progress in skills otherwise. The effect of the intervention was indicated from the fact that later diagnosed children before the intervention were behind earlier diagnosed children after the intervention -when at a comparable age- on all reading and spelling measures. Finally, we showed that an early or later diagnosis of dyslexia similarly predicts the growth of reading and spelling outcomes with only a small benefit of early diagnosis for pseudoword reading efficiency. Keywords: dyslexia, early diagnosis, responsiveness to intervention

中文翻译：

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阅读障碍的二级和三级诊断后对干预的反应

摘要 本研究调查了早期与晚期诊断为阅读障碍的儿童对干预的反应。我们检查了在阅读障碍干预之前、之中和之后以及在前兆测量中，有阅读障碍的二级（n = 122；早期诊断）和三级（n = 158；晚期诊断）评分者在阅读和拼写能力方面的差异。还将分数与二年级 (n = 108) 和三年级 (n = 119) 的典型阅读同伴的分数进行比较。最后，我们检查了二级和三级诊断在预测干预反应性变化中的作用。在干预之前，早期诊断组几乎在所有指标上都落后于晚期诊断组。在干预期间，较早诊断出的组在单词解码的准确性方面取得了更大的进步，并且在其他方​​面表现出相当的进步。干预的效果从以下事实表明：干预前较晚诊断的儿童在所有阅读和拼写测量方面均落后于干预后较早诊断的儿童 - 当年龄相当时。最后，我们表明，阅读障碍的早期或晚期诊断同样可以预测阅读和拼写结果的增长，但早期诊断对伪词阅读效率的益处很小。关键词：阅读障碍，早期诊断，干预反应 干预的效果从以下事实表明：干预前较晚诊断的儿童在所有阅读和拼写测量方面均落后于干预后较早诊断的儿童 - 当年龄相当时。最后，我们表明，阅读障碍的早期或晚期诊断同样可以预测阅读和拼写结果的增长，但早期诊断对伪词阅读效率的益处很小。关键词：阅读障碍，早期诊断，干预反应 干预的效果从以下事实表明：干预前较晚诊断的儿童在所有阅读和拼写测量方面均落后于干预后较早诊断的儿童 - 当年龄相当时。最后，我们表明，阅读障碍的早期或晚期诊断同样可以预测阅读和拼写结果的增长，但早期诊断对伪词阅读效率的益处很小。关键词：阅读障碍，早期诊断，干预反应