Bennett C W, Ingle B H
J Commun Disord. 1984 Oct;17(5):361-9. doi: 10.1016/0021-9924(84)90037-6.
The effects of word frequency, phonetic environment, and phoneme position on the production of /s/ in words by 50 phonologically impaired children were examined. Results indicated that: word frequency of occurrence did not significantly affect the rate of misarticulation; phonetic environments were significantly related to articulation errors; and positional variations were significantly different, prevocalic /s/ was easiest, followed by postvocalic and initial consonant clusters. These results are compared with previous studies, and the implications for management are discussed.
研究了50名语音障碍儿童的词频、语音环境和音素位置对单词中/s/发音的影响。结果表明：出现的词频对发音错误率没有显著影响；语音环境与发音错误显著相关；位置变化存在显著差异，元音前的/s/最容易发音，其次是元音后的/s/和初始辅音丛。将这些结果与之前的研究进行了比较，并讨论了其对治疗的意义。
