A taxometric investigation of developmental dyslexia subtypes.
A taxometric investigation of developmental dyslexia subtypes.
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发育性阅读障碍亚型的分类学研究。
DOI：
10.1002/dys.1431
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Lovett,MaureenW
中科院分区：
文献类型：
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作者：
O'Brien,BethA;Wolf,Maryanne;Lovett,MaureenW
发展性阅读障碍的概念化、识别和分型的长期问题仍然存在。本研究采用分类学的方法来研究发展性阅读障碍的异质性。这些方法被用于671名6-8岁儿童的大样本，他们被诊断患有严重的阅读障碍。潜在特征的样本进行评估方面的假定亚型语音赤字和命名速度的赤字，从而扩展以前的工作，解决这些赤字是否体现单独的类的个人。研究结果支持单独的分类群的阅读障碍和语音缺陷。不同的潜在结构命名速度赤字被发现取决于用于定义阅读障碍的定义标准。非语音基础形式的阅读障碍表现出特别困难的命名速度和阅读流畅性。版权所有© 2012 John Wiley & Sons，Ltd。从业者观点对不同亚型的阅读障碍（有和没有语音缺陷（PD））的支持表明需要不同的干预方法。基于差异的标准识别了更多可能因干预反应诊断而错过的非PD病例。声音符号对应和解码措施可能最好地区分有和没有PD的阅读障碍病例。
Long‐standing issues with the conceptualization, identification and subtyping of developmental dyslexia persist. This study takes an alternative approach to examine the heterogeneity of developmental dyslexia using taxometric classification techniques. These methods were used with a large sample of 671 children ages 6–8 who were diagnosed with severe reading disorders. Latent characteristics of the sample are assessed in regard to posited subtypes with phonological deficits and naming speed deficits, thus extending prior work by addressing whether these deficits embody separate classes of individuals. Findings support separate taxa of dyslexia with and without phonological deficits. Different latent structure for naming speed deficits was found depending on the definitional criterion used to define dyslexia. Non‐phonologically based forms of dyslexia showed particular difficulty with naming speed and reading fluency. Copyright © 2012 John Wiley & Sons, Ltd.Practitioner PointsSupport for separate subtypes of dyslexia, with and without phonological deficits (PDs), indicates a need for different approaches to intervention.A discrepancy‐based criterion identifies more non‐PD cases that may be missed with a response‐to‐intervention diagnosis.Sound symbol correspondence and decoding measures may best distinguish cases of dyslexia with and without PDs.