Two experiments examined the influence of phonologically similar neighbors on articulation of words' initial stop consonants in order to investigate the conditions under which lexically-conditioned phonetic variation arises. In Experiment 1, participants produced words in isolation. Results showed that the voice-onset time (VOT) of a target's initial voiceless stop was predicted by its overall neighborhood density, but not by its having a voicing minimal pair. In Experiment 2, participants read aloud the same targets after semantically predictive sentence contexts and after neutral sentence contexts. Results showed that, although VOTs were shorter in words produced after predictive contexts, the neighborhood density effect on VOT production persisted irrespective of context. These findings suggest that global competition from a word's neighborhood affects spoken word production independently of contextual modulation and support models in which activation cascades automatically and obligatorily among all of a selected target word's phonological neighbors during acoustic-phonetic encoding.

中文翻译：

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无论句子上下文如何，语音邻里竞争都会影响口语单词的产生

两个实验检查了语音相似的邻居对单词初始停止辅音发音的影响，以研究出现词汇条件语音变化的条件。在实验 1 中，参与者孤立地造词。结果表明，目标的初始清音停止的发声时间 (VOT) 是由其整体邻域密度预测的，而不是通过其具有最小浊音对来预测。在实验 2 中，参与者在语义预测句子上下文和中性句子上下文之后大声朗读相同的目标。结果表明，尽管在预测上下文之后产生的单词中 VOT 较短，但无论上下文如何，邻域密度对 VOT 产生的影响仍然存在。这些发现表明，来自一个词的全球竞争