Hunter L, Pring T, Martin S
Department of Clinical Communication Studies, City University, London.
Br J Disord Commun. 1991 Aug;26(2):163-74. doi: 10.3109/13682829109012001.
The effects of strategies on the intelligibility of cerebral-palsied speech were experimentally evaluated. Listeners were asked to identify words in sentences spoken by subjects whose dysarthria was rated to be either moderate or severe. Results indicated that strategies increased intelligibility and that different strategies were appropriate at different levels of severity. Use of initial letter cueing achieved the greatest gains for the more severely impaired speakers but, for the less severely impaired, the gains achieved by providing visual cues were the same as those achieved by letter cueing and could not be improved upon by repetition. Listeners' experience of dysarthric speech and the redundancy of the test sentences were also manipulated. Previous experience did not influence recognition and redundancy only appeared to have an influence at higher levels of intelligibility. The role of strategies in improving intelligibility is discussed. The results suggest that many speakers will be unable to use simple strategies to improve intelligibility to levels that may be needed for adequate information transfer.
通过实验评估了各种策略对脑瘫患者言语清晰度的影响。要求听众识别由构音障碍程度评定为中度或重度的受试者所讲句子中的单词。结果表明，策略提高了言语清晰度，并且不同的策略在不同严重程度水平上是合适的。对于受损更严重的说话者，使用首字母提示获得的收益最大，但对于受损较轻的说话者，提供视觉提示所获得的收益与字母提示相同，且重复并不能进一步提高。还对听众对构音障碍言语的体验以及测试句子的冗余度进行了操控。以往经验并未影响识别，冗余度似乎仅在较高言语清晰度水平上有影响。讨论了策略在提高言语清晰度中的作用。结果表明，许多说话者将无法使用简单策略将言语清晰度提高到足够信息传递可能所需的水平。
