Affolter F, Brubaker R, Franklin W
J Psycholinguist Res. 1978 May;7(3):213-41. doi: 10.1007/BF01067043.
The speech-sound production of severely language-impaired children was monitored in a longitudinal study. In order to generalize findings, acoustical, phonemic, and clinical observation data were collected from 30 children. Results showed that speech-sound acquisition goes through a hierarchical sequence of development and that speech-sound production will deteriorate in a predictable manner depending on the pathology. The authors hypothesize a speech-sound acquisition model, SSAM, based on the development observed.
在一项纵向研究中，对严重语言障碍儿童的语音产生进行了监测。为了归纳研究结果，收集了30名儿童的声学、音素和临床观察数据。结果表明，语音习得经历了一个分层的发展序列，并且语音产生会根据病理情况以可预测的方式恶化。作者基于观察到的发展情况提出了一个语音习得模型，即SSAM。
