Abstract This study investigates the phonetic implementation of Galician /ɛ-e/ and /ɔ-o/ as produced by Galician-Spanish early bilinguals. It examines whether there is variation that can be explained by differences in participants’ linguistic histories (as captured by their language dominance scores). Based on production data from one point in participants’ lives, the study uses regression to predict phonetic variation from participants’ language dominance at that point in life. Results reveal that, although participants produce a robust /e/ vs /e/ contrast, the L1 specific category, /e/ presented a more fronted position, more like /e/, as a function of lower dominance in Galician. However, this effect was not replicated for the back vowels. Given our results, we argue that differences in language dominance may trigger phonetic variation in bilingual speech production in some variables, but not others. This result is consistent with the current cognitive approach in bilingualism research claiming the plasticity of native phonetic domains throughout an individual’s lifespan. Results also align with recent claims that language dominance does not equally affect multiple phonological processes for the same individual.

中文翻译：

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L1 语音渗透性和通往潜在合并的语音路径

摘要 本研究调查了加利西亚-西班牙早期双语者所产生的加利西亚语 /ɛ-e/ 和 /ɔ-o/ 的语音实现。它检查是否存在可以通过参与者语言历史的差异（由他们的语言优势分数捕获）来解释的变化。根据参与者生活中某一时刻的生产数据，该研究使用回归来预测参与者在生活中那个时刻的语言优势的语音变化。结果表明，尽管参与者产生了强大的 /e/ 与 /e/ 对比，但 L1 特定类别 /e/ 呈现出更靠前的位置，更像 /e/，作为加利西亚语中较低优势的函数。然而，后元音没有复制这种效果。鉴于我们的结果，我们认为语言优势的差异可能会在某些变量中引发双语语音产生的语音变化，但不会引发其他变量。这一结果与目前双语研究中的认知方法一致，该方法声称母语语音域在整个人的一生中具有可塑性。结果还与最近的说法一致，即语言优势不会同等影响同一个人的多个语音过程。