Individual differences in perceptual adaptability of foreign sound categories.
Individual differences in perceptual adaptability of foreign sound categories.
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DOI：
10.3758/s13414-015-0987-1
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发表时间：
2016-01
期刊：
影响因子：
--
通讯作者：
Warner N
中科院分区：
文献类型：
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作者：
Schertz J;Cho T;Lotto A;Warner N
听众具有适应语音声音类别（例如，不同口音）的实现中的声学变化的显著能力。目前的工作测试是否非母语的听众适应他们使用的声学线索在语音分类时，他们面临的变化，在输入中的线索的分布，作为母语的听众，并探讨在何种程度上这些适应模式的影响，由个人的线索加权策略。与以前的工作一致，母语为英语的听众，谁使用VOT作为一个主要线索，停止发声对比（例如“pa”与“ba”），调整他们的使用f0（一个次要线索的对比）时，面对一个非规范的“口音”，其中两个线索提供了冲突的信息类别成员。韩国本土听众的适应策略虽然各不相同，但根据他们最初的线索加权策略是可以预测的。特别是，使用f0作为类别成员资格的主要线索的听众调整了他们对VOT（他们的次要线索）的使用，以响应非规范口音，反映了“降低权重”次要线索的原生模式。结果表明，非母语的听众表现出像本地人一样的敏感性分布信息的输入，并使用这些信息来调整分类，就像本地听众一样，与初始线索加权策略的类别适应的具体轨迹。
Listeners possess a remarkable ability to adapt to acoustic variability in the realization of speech sound categories (e.g. different accents). The current work tests whether non-native listeners adapt their use of acoustic cues in phonetic categorization when they are confronted with changes in the distribution of cues in the input, as native listeners do, and examines to what extent these adaptation patterns are influenced by individual cue-weighting strategies. In line with previous work, native English listeners, who use VOT as a primary cue to the stop voicing contrast (e.g. ‘pa’ vs. ‘ba’), adjusted their use of f0 (a secondary cue to the contrast) when confronted with a noncanonical “accent” in which the two cues gave conflicting information about category membership. Native Korean listeners’ adaptation strategies, while variable, were predictable based on their initial cue weighting strategies. In particular, listeners who used f0 as the primary cue to category membership adjusted their use of VOT (their secondary cue) in response to the noncanonical accent, mirroring the native pattern of “downweighting” a secondary cue. Results suggest that non-native listeners show native-like sensitivity to distributional information in the input and use this information to adjust categorization, just as native listeners do, with the specific trajectory of category adaptation governed by initial cue-weighting strategies.