The interaction between vocabulary size and phonotactic probability effects on children's production accuracy and fluency in nonword repetition
The interaction between vocabulary size and phonotactic probability effects on children's production accuracy and fluency in nonword repetition
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DOI：
10.1044/1092-4388(2004/034
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发表时间：
2004-04-01
影响因子：
2.6
通讯作者：
Munson, B
中科院分区：
文献类型：
--
作者：
Edwards, J;Beckman, ME;Munson, B
成年人在各种任务上的表现表明，非词的语音处理是基于对所有已知词的亚词汇模式的概括。一小部分研究表明，儿童的语音习得同样是基于对词汇的概括。为了验证这一说法，104名儿童和22名成人的非词重复的生产准确性和流畅性进行了检查。刺激是22对非词，其中一个非词包含一个低频或未经证实的双音素序列，另一个包含一个高频序列。对于这些非词对的一个子集，段持续时间进行了测量。与高频序列相比，同样的声音在低频序列中出现时持续时间更长（不那么流利）。低频序列重复的准确性也低于高频序列。此外，词汇量较小的儿童比词汇量较大的儿童表现出频率对准确性的更大影响。两者合计，这些结果提供了一个模型的语音习得中，知识的子词汇单位出现概括的词汇项目提供了支持。
Adults' performance on a variety of tasks suggests that phonological processing of nonwords is grounded in generalizations about sublexical patterns over all known words. A small body of research suggests that children's phonological acquisition is similarly based on generalizations over the lexicon. To test this account, production accuracy and fluency were examined in nonword repetitions by 104 children and 22 adults. Stimuli were 22 pairs of nonwords, in which one nonword contained a low-frequency or unattested two-phoneme sequence and the other contained a high-frequency sequence. For a subset of these nonword pairs, segment durations were measured. The same sound was produced with a longer duration (less fluently) when it appeared in a low-frequency sequence, as compared to a high-frequency sequence. Low-frequency sequences were also repeated with lower accuracy than high-frequency sequences. Moreover, children with smaller vocabularies showed a larger influence of frequency on accuracy than children with larger vocabularies. Taken together, these results provide support for a model of phonological acquisition in which knowledge of sublexical units emerges from generalizations made over lexical items.