Strategies used by children with typical and atypical phonological development during the blocked syllable acquisition

PURPOSE: to study the use of repair strategies by children with typical and atypical speech development through an analysis guided by the syllable from a target with simple coda. METHODS: speech data from 24 children with typical speech development and from 12 children with atypical speech development were analyzed. The children's ages were between 1:0 and 4:0 and between 4:1 and 7:0, respectively. The analyzed dependant variable included the following syllabic variants: syllable omission, coda omission, epenthesis, metathesis, and coalescence. The statistical analysis was accomplished through the use of the Statistical Program VARBRUL. RESULTS: it was possible to verify the use of repair strategies such as coda omission, coalescence, epenthesis, and metathesis in the children with speech disorders. The group with typical speech development presented higher occurrence of syllable omission. The variable age was significant for coda omission. When observing the variable sex, the girls with atypical speech development seem to use repair strategies more frequently, while the boys omit coda more often. Both groups tend to preserve the word final position. The extrametrical positions were more favorable for coda omission in the group with atypical speech acquisition. The post-stressed position is more favorable for coda omission and the stressed position is favorable for syllable omission in the group with typical development. CONCLUSION: the groups used different repair strategies during the blocked syllable acquisition. The group with typical acquisition prefers to omit the syllable, while the group with phonological disorders used the other analyzed repair strategies.研究目的：本研究旨在以带有简单尾辅音韵尾（coda）的目标音节为分析引导，探究典型言语发育与非典型言语发育儿童所采用的音系修正策略。 研究方法：本研究分析了24名典型言语发育儿童与12名非典型言语发育儿童的言语数据。两组儿童的年龄区间分别为1岁0个月至4岁0个月，以及4岁1个月至7岁0个月。本次分析的因变量涵盖以下音节变体类型：音节省略、尾辅音韵尾省略、增音、换位与融合。统计分析采用VARBRUL统计软件（VARBRUL）完成。 研究结果：本研究证实，言语障碍儿童会使用尾辅音韵尾省略、融合、增音与换位等音系修正策略。典型言语发育组的音节省略发生率更高。年龄变量对尾辅音韵尾省略具有显著影响。针对性别变量展开观察可见，非典型言语发育女童的音系修正策略使用频率更高，而男童则更常出现尾辅音韵尾省略的情况。两组儿童均倾向于保留词尾位置的音节。在非典型言语获得组中，超节律位置（extrametrical position）更易出现尾辅音韵尾省略。在典型发育组中，重音后位置更易出现尾辅音韵尾省略，而重音位置则更易出现音节省略。 研究结论：两组儿童在受阻音节习得过程中所使用的音系修正策略存在显著差异。典型言语获得组更倾向于采用音节省略策略，而语音障碍组则选用本次分析所涵盖的其余音系修正策略。