Individual Differences in Categorization Gradience As Predicted by Online Processing of Phonetic Cues During Spoken Word Recognition: Evidence From Eye Movements
Individual Differences in Categorization Gradience As Predicted by Online Processing of Phonetic Cues During Spoken Word Recognition: Evidence From Eye Movements
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DOI：
10.1111/cogs.12948
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发表时间：
2021-03-01
影响因子：
2.5
通讯作者：
Xiang, Ming
中科院分区：
文献类型：
--
作者：
Ou, Jinghua;Yu, Alan C. L.;Xiang, Ming
最近的研究已经证明了典型的听众之间的差异，他们如何梯度分类语音的声音，这种差异分类梯度可能链接到听众如何权重不同的线索在传入的信号。本研究测试了两组英语对比中的分类梯度和线索权重之间的关系，每组对比在两个声学维度上正交变化。受试者在视觉世界范式中执行四种选择的强迫选择识别任务，同时监测他们的眼动。我们发现：（a）从行为识别反应中获得的分类梯度越大，对应于从眼动中获得的次级线索权重越大;（B）分类梯度和次级线索权重之间的关系在线索和对比中均被观察到，这表明分类梯度可能是言语知觉中一致的个体内属性;（3）具有更大分类梯度的听者倾向于采用缓冲处理策略，尤其是当线索在时间上不同步时。
Recent studies have documented substantial variability among typical listeners in how gradiently they categorize speech sounds, and this variability in categorization gradience may link to how listeners weight different cues in the incoming signal. The present study tested the relationship between categorization gradience and cue weighting across two sets of English contrasts, each varying orthogonally in two acoustic dimensions. Participants performed a four-alternative forced-choice identification task in a visual world paradigm while their eye movements were monitored. We found that (a) greater categorization gradience derived from behavioral identification responses corresponds to larger secondary cue weights derived from eye movements; (b) the relationship between categorization gradience and secondary cue weighting is observed across cues and contrasts, suggesting that categorization gradience may be a consistent within-individual property in speech perception; and (c) listeners who showed greater categorization gradience tend to adopt a buffered processing strategy, especially when cues arrive asynchronously in time.