Smith Allan B, Roberts Jenny, Lambrecht Smith Susan, Locke John L, Bennett Jane
Department of Communication Sciences and Disorders, 5724 Dunn Hall, University of Maine, Orono, ME 04469-5724, USA.
Am J Speech Lang Pathol. 2006 Aug;15(3):289-97. doi: 10.1044/1058-0360(2006/027).
This study evaluated whether developmental reading disability could be predicted in children at the age of 30 months, according to 3 measures of speech production: speaking rate, articulation rate, and the proportion of speaking time allocated to pausing.
Speech samples of 18 children at high risk and 10 children at low risk for reading disability were recorded at 30 months of age. High risk was determined by history of reading disability in at least 1 of the child's parents. In grade school, a reading evaluation identified 9 children within the high-risk group as having reading disability and 9 children as not having reading disability. The 10 children at low risk for reading disability tested negative for reading disability.
Children with reading disability showed a significantly slower speaking rate than children at high risk without reading disability. Children with reading disability allocated significantly more time to pausing, as compared with the other groups. Articulation rate did not differ significantly across groups.
Speaking rate and the proportion of pausing time to speaking time may provide an early indication of reading outcome in children at high risk for reading disability.
本研究根据言语产生的三项指标（说话速度、发音速度以及停顿时间在说话时间中所占的比例）评估30个月大的儿童是否能被预测患有发育性阅读障碍。
记录了18名阅读障碍高风险儿童和10名阅读障碍低风险儿童在30个月大时的言语样本。高风险由儿童至少一位家长有阅读障碍病史来确定。在小学阶段，一项阅读评估确定高风险组中有9名儿童患有阅读障碍，9名儿童没有阅读障碍。10名阅读障碍低风险儿童的阅读障碍测试呈阴性。
与没有阅读障碍的高风险儿童相比，患有阅读障碍的儿童说话速度明显更慢。与其他组相比，患有阅读障碍的儿童停顿时间明显更长。各组之间的发音速度没有显著差异。
说话速度以及停顿时间与说话时间的比例可能为阅读障碍高风险儿童的阅读结果提供早期指标。
