Shriberg Lawrence D, Lohmeier Heather L, Campbell Thomas F, Dollaghan Christine A, Green Jordan R, Moore Christopher A
Waisman Center, University of Wisconsin-Madison, Madison, WI, USA.
J Speech Lang Hear Res. 2009 Oct;52(5):1189-212. doi: 10.1044/1092-4388(2009/08-0047). Epub 2009 Jul 27.
Conceptual and methodological confounds occur when non(sense) word repetition tasks are administered to speakers who do not have the target speech sounds in their phonetic inventories or who habitually misarticulate targeted speech sounds. In this article, the authors (a) describe a nonword repetition task, the Syllable Repetiton Task (SRT), that eliminates this confound and (b) report findings from 3 validity studies.
Ninety-five preschool children with speech delay and 63 with typical speech completed an assessment battery that included the Nonword Repetition Task (NRT; C. Dollaghan & T. F. Campbell, 1998) and the SRT. SRT stimuli include only 4 of the earliest occurring consonants and 1 early occurring vowel.
Study 1 findings indicated that the SRT eliminated the speech confound in nonword testing with speakers who misarticulate. Study 2 findings indicated that the accuracy of the SRT to identify expressive language impairment was comparable to findings for the NRT. Study 3 findings illustrated the SRT's potential to interrogate speech processing constraints underlying poor nonword repetition accuracy. Results supported both memorial and auditory-perceptual encoding constraints underlying nonword repetition errors in children with speech-language impairment.
The SRT appears to be a psychometrically stable and substantively informative nonword repetition task for emerging genetic research and other research with speakers who misarticulate.
当对语音库中没有目标语音或习惯性错误发音目标语音的说话者进行非(无意义)词重复任务时,会出现概念和方法上的混淆。在本文中,作者(a)描述了一种非词重复任务,即音节重复任务(SRT),它消除了这种混淆,并且(b)报告了三项效度研究的结果。
95名有语言延迟的学龄前儿童和63名语音正常的儿童完成了一组评估,其中包括非词重复任务(NRT;C. 多拉汉和T. F. 坎贝尔,1998年)和SRT。SRT刺激仅包括最早出现的4个辅音和1个早期出现的元音。
研究1的结果表明,SRT消除了对发音错误的说话者进行非词测试时的语音混淆。研究2的结果表明,SRT识别表达性语言障碍的准确性与NRT的结果相当。研究3的结果说明了SRT在探究非词重复准确性差背后的语音处理限制方面的潜力。结果支持了语言障碍儿童非词重复错误背后的记忆和听觉感知编码限制。
对于新兴的基因研究以及其他针对发音错误的说话者的研究而言,SRT似乎是一种心理测量稳定且具有实质信息的非词重复任务。