Pratt S R, Heintzelman A T, Deming S E
Department of Communicative Disorders, University of Wisconsin-Madison.
J Speech Hear Res. 1993 Oct;36(5):1063-74. doi: 10.1044/jshr.3605.1063.
The efficacy of the IBM SpeechViewer's Vowel Accuracy Module for the treatment of vowel productions was evaluated in six preschool children with hearing-impairment over a 4-month period. A single-subject design was used, and the vowels /a/, /i/ and /u/ were treated. Untreated sounds also were probed to monitor for carryover and developmental effects. One of the children was dismissed from the study because of noncompliance. Of the remaining five children, four exhibited a treatment effect for /u/, two for /a/, and one for /i/. Four of the children demonstrated some generalization. Developmental effects, as represented by change in /s/-cluster production, were not documented. Although treatment effects were observed, difficulties with the Vowel Accuracy Module were also observed. These included inaccuracies in the feedback on low-intensity, hypernasal, and high-pitched utterances; inability to sustain the attention of preschoolers over multiple sessions; lack of instructional feedback; and nonlinearity in the criterion-adjustment control.
在4个月的时间里，对6名听力受损的学龄前儿童评估了IBM语音观察器的元音准确性模块治疗元音发音的疗效。采用单受试者设计，对元音/a/、/i/和/u/进行治疗。还对未治疗的语音进行探测，以监测迁移和发育效应。其中一名儿童因不遵守规定而退出研究。在其余5名儿童中，4名在/u/的治疗上显示出效果，2名在/a/的治疗上显示出效果，1名在/i/的治疗上显示出效果。4名儿童表现出一定的迁移效果。未记录到以/s/群发音变化为代表的发育效应。虽然观察到了治疗效果，但也观察到了元音准确性模块存在的问题。这些问题包括对低强度、鼻音过重和高音调发音的反馈不准确；无法在多个疗程中持续吸引学龄前儿童的注意力；缺乏教学反馈；以及标准调整控制中的非线性。
