Specific language impairment and grammatical morphology: A discriminant function analysis
Specific language impairment and grammatical morphology: A discriminant function analysis
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DOI：
10.1044/jslhr.4105.1185
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发表时间：
1998-10-01
影响因子：
2.6
通讯作者：
Leonard, LB
中科院分区：
文献类型：
--
作者：
Bedore, LM;Leonard, LB
采用判别函数分析来确定语法语素产生是否可以用于学龄前特殊语言障碍儿童（SLI）和语言技能正常发展儿童的分类。判别分析包括三个变量：有限动词语素组合、名词语素组合和语素中的平均话语长度。患有特殊语言障碍的儿童和年龄匹配的对照组被区分出了很高的准确性，尽管这三个变量并没有产生相同的分类。在正常发育儿童和特殊语言障碍儿童两个样本中，动词语素组合的灵敏度超过85%，特异性为100%。鉴于这些结果和越来越多的证据表明，有限动词形态的问题在患有特殊语言障碍的儿童中持续到上学时期，动词语素组合被认为是有希望作为特殊语言障碍的临床标志。
Discriminant function analysis was employed to determine if grammatical morpheme production could be used to classify preschool-age children with specific language impairment (SLI) and children with typically developing language skills. Three variables were included in the discriminant analysis: a Finite verb morpheme composite, a noun morpheme composite, and mean length of utterance in morphemes. The children with SLI and age-matched controls were discriminated with high levels of accuracy, though the three variables did not yield identical classifications. Across two samples of typically developing children and children with SLI, the verb morpheme composite showed sensitivity exceeding 85% and specificity of 100%. In light of these results and growing evidence that problems with finite verb morphology continue into the school years in children with SLI, the verb morpheme composite was considered to hold promise as a clinical marker for SLI.