Transitional probabilities and positional frequency phonotactics in a hierarchical model of speech segmentation
Transitional probabilities and positional frequency phonotactics in a hierarchical model of speech segmentation
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DOI：
10.3758/s13421-011-0074-3
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发表时间：
2011-08-01
影响因子：
2.4
通讯作者：
Nazzi, Thierry
中科院分区：
文献类型：
--
作者：
Mersad, Karima;Nazzi, Thierry
本研究探讨了语音战术的新指标对成人使用过渡概率分割人工语言的影响。我们让土生土长的法国成年人接触到连续不断的三音节无意义词汇。高频词与法语语音策略的一致性或高或低，也就是说它们的音节在法语三音节词中的位置频率或高或低。在测试中，参与者听到的是低频单词和部分单词，它们的过渡概率不同（单词高，部分单词低），但在频率和语音一致性上是匹配的。只有在高一致性语言中，参与者才更喜欢单词而不是部分单词。这些结果表明，细微的语音定向操作可以影响成年人使用过渡概率来分割语音，并且明确表明，这种先验知识除了影响随后的词汇决策外，还直接干扰了分割过程。讨论了分割线索的层次理论的含义。
The present study explored the influence of a new metrics of phonotactics on adults' use of transitional probabilities to segment artificial languages. We exposed French native adults to continuous streams of trisyllabic nonsense words. High-frequency words had either high or low congruence with French phonotactics, in the sense that their syllables had either high or low positional frequency in French trisyllabic words. At test, participants heard low-frequency words and part-words, which differed in their transitional probabilities (high for words, low for part-words) but were matched for frequency and phonotactic congruency. Participants' preference for words over part-words was found only in the high-congruence languages. These results establish that subtle phonotactic manipulations can influence adults' use of transitional probabilities to segment speech and unambiguously demonstrate that this prior knowledge interferes directly with segmentation processes, in addition to affecting subsequent lexical decisions. Implications for a hierarchical theory of segmentation cues are discussed.