Hoover Jill R, Storkel Holly L
Department of Communication Disorders, University of Massachusetts-Amherst, Amherst, USA.
Clin Linguist Phon. 2013 Sep;27(9):661-80. doi: 10.3109/02699206.2013.789928. Epub 2013 Jul 2.
The purpose of this study was to test the effect of manipulating verb neighbourhood density in treatment targeting the third person singular lexical affix. Using a single-subject experimental design, six pre-schoolers with Specific Language Impairment (SLI) were randomly assigned to one of two conditions: (1) treatment with sparse verbs or (2) treatment with dense verbs in 12 sessions. The third person singular lexical affix was targeted for 12 sessions of treatment in both conditions. Treatment gain and generalization were measured as the dependent variables. Third person singular % correct change from pre-treatment to post-treatment was measured using sentence production tasks with comparisons across the two treatment conditions. Treatment gain and generalization were greater for children enrolled in the sparse condition. Preliminary clinical recommendations are made and theoretical implications are discussed relative to neighbourhood density effects on lexical activation and storage in children with SLI.
本研究的目的是测试在针对第三人称单数词法词缀的治疗中操纵动词邻域密度的效果。采用单被试实验设计，将六名患有特定语言障碍（SLI）的学龄前儿童随机分配到两个条件之一：（1）使用稀疏动词进行治疗，或（2）在12个疗程中使用密集动词进行治疗。在两种条件下，均针对第三人称单数词法词缀进行12个疗程的治疗。将治疗效果和泛化作为因变量进行测量。使用句子生成任务测量从治疗前到治疗后第三人称单数正确百分比的变化，并对两种治疗条件进行比较。在稀疏条件下接受治疗的儿童，其治疗效果和泛化程度更高。本文提出了初步的临床建议，并讨论了邻域密度对SLI儿童词汇激活和存储的影响的理论意义。
