Gagné J P, Dinon D, Parsons J
Elborn College, University of Western Ontario, London.
J Speech Hear Res. 1991 Feb;34(1):213-21. doi: 10.1044/jshr.3401.213.
This study assessed the effectiveness of CAST (Computer-Aided Speechreading Training program). Two groups of 8 normal-hearing adults completed a pretraining visual speech perception test protocol that consisted of a Visual-Consonant Recognition Test, a test of Sentence Understanding Without Context, a test of Sentence Understanding With Context, and a semiautomated modified Continuous Discourse Tracking activity available with CAST. One group completed the CAST program. A posttraining test protocol was administered to the subjects 2 weeks following the maximum time provided to complete the training program (i.e., 10 weeks). Independent t tests revealed no differences between the control group and the experimental group in the percentage improvement score obtained on the following measures: viseme recognition score, Sentence Understanding Without Context (key word and total word recognition scores), and Sentence Understanding With Context (key word recognition score). Significant differences between the groups were found for the total word recognition score on the Sentence Understanding With Context test and the CAST modified Continuous Discourse Tracking activity. The results indicate that CAST was most effective in developing aspects of synthetic visual speech perception skills.
本研究评估了CAST（计算机辅助言语阅读训练程序）的有效性。两组各8名听力正常的成年人完成了一项训练前视觉言语感知测试方案，该方案包括视觉辅音识别测试、无上下文句子理解测试、有上下文句子理解测试，以及CAST提供的半自动改良连续语篇跟踪活动。一组完成了CAST程序。在提供完成训练计划的最长时间（即10周）后的2周，对受试者进行了训练后测试方案。独立t检验显示，在以下测量指标的改善得分百分比方面，对照组和实验组之间没有差异：视位识别得分、无上下文句子理解（关键词和总词识别得分）以及有上下文句子理解（关键词识别得分）。在有上下文句子理解测试的总词识别得分和CAST改良连续语篇跟踪活动方面，两组之间存在显著差异。结果表明，CAST在培养合成视觉言语感知技能方面最为有效。
