Evans Julia L, Viele Kert, Kass Robert E, Tang Feng
Department of Communicative Disorders, Waisman Center, University of Wisconsin-Madison, 53705, USA. jevans2@facstaff/wisc.edu
J Speech Lang Hear Res. 2002 Jun;45(3):494-504. doi: 10.1044/1092-4388(2002/039).
Studies investigating the relationship between the use of inflectional morphology and speech-perception abilities in children with SLI traditionally have employed synthetic speech stimuli. The purpose of this study was to replicate the findings reported in Leonard, McGregor, and Allen (1992) with an older group of children with SLI and to determine if the pattern of deficits seen for synthetic speech extends to perception of natural speech stimuli. The speech-perception abilities of 27 children between the ages of 6;11 and 8;11 (15 SLI and 12 NL) were compared using natural and synthetic versions of the [das]-[daS], [dabiba]-[dabuba], and [i]-[u] contrast pairs originally used in Leonard et al. The findings reported by Leonard et al. were replicated with synthetic speech but not for the natural speech. Use of inflectional morphology in obligatory contexts by the children with SLI was not significantly correlated with their perception abilities for any of the natural or synthetic speech-contrast pairs. Further, although both groups' ability to maintain the target contrast in memory declined over the span of the trials for all target contrasts for both natural and synthetic speech, the rate of decline did not differ significantly between the SLI and NL groups. Findings are discussed with respect to possible deficits in linking phonological representations to grammatical representations in children with SLI.
传统上，研究语言迟缓儿童屈折形态的使用与言语感知能力之间关系的研究采用的是合成语音刺激。本研究的目的是对伦纳德、麦格雷戈和艾伦（1992年）报告的研究结果进行重复验证，研究对象为年龄更大的语言迟缓儿童，并确定合成语音中出现的缺陷模式是否也适用于自然语音刺激的感知。研究使用了伦纳德等人最初使用的 [das]-[daS]、[dabiba]-[dabuba] 和 [i]-[u] 对比对的自然版本和合成版本，对27名年龄在6岁11个月至8岁11个月之间的儿童（15名语言迟缓儿童和12名正常语言儿童）的言语感知能力进行了比较。伦纳德等人报告的研究结果在合成语音方面得到了重复验证，但在自然语音方面却没有。语言迟缓儿童在强制性语境中使用屈折形态的情况与他们对任何自然或合成语音对比对的感知能力均无显著相关性。此外，尽管两组儿童在记忆中保持目标对比的能力在自然语音和合成语音的所有目标对比试验过程中均有所下降，但语言迟缓组和正常语言组之间的下降速率并无显著差异。本文将结合语言迟缓儿童在将语音表征与语法表征相联系时可能存在的缺陷对研究结果进行讨论。
