Reed C M, Doherty M J, Braida L D, Durlach N I
J Speech Hear Res. 1982 Jun;25(2):216-23. doi: 10.1044/jshr.2502.216.
Results are presented for two studies of speechreading through the Tadoma method using normal subjects with simulated deafness and blindness. In the first study, subjects received training on the identification of consonant and vowel stimuli through Tadoma. In posttraining tests, an average score of 73% was obtained on a set of 24 consonants presented in CV syllables, and an average score of 82% was obtained on a set of 15 vowels and diphthongs presented in /g/-V-/d/ syllables. An analysis of the confusion matrices derived from the identification tests in terms of of various articulatory/phonological features indicated that the features place, voicing, frication, and round were well-perceived for consonants and round, tense, vertical lip separation, and low, for vowels. In the second study, subjects received training through Tadoma on comprehension of sentences composed of words from a 43-item vocabulary. In tests for which sentence stimuli were repeated until a correct response was obtained, the subjects identified an average of 30% of the words correctly on the first presentation and required an average of roughly four presentations for complete identification of the stimulus.
本文展示了两项关于通过塔多玛法进行唇读的研究结果，研究对象是具有模拟失聪和失明症状的正常受试者。在第一项研究中，受试者接受了通过塔多玛法识别辅音和元音刺激的训练。在训练后的测试中，对于以CV音节呈现的一组24个辅音，平均得分73%；对于以/g/-V-/d/音节呈现的一组15个元音和双元音，平均得分82%。根据各种发音/音系特征对识别测试得出的混淆矩阵进行分析表明，辅音的发音部位、浊音、摩擦音和圆唇特征以及元音的圆唇、紧音、垂直唇距和低位特征都能被较好地感知。在第二项研究中，受试者通过塔多玛法接受了对由43个词汇组成的句子的理解训练。在句子刺激被重复直到获得正确反应的测试中，受试者在第一次呈现时平均正确识别30%的单词，平均需要大约四次呈现才能完全识别刺激。
