The multilingual landscape of Canada creates opportunities for many heterogeneous bilingual communities to experience systematic phonetic variation within and across languages and dialects, and exposes listeners to different pronunciation variants. This paper examines phonetic variation through the lens of an ongoing sound change in Cantonese involving word-initial [n] and [l] across two primed lexical decision tasks (Experiment 1: Immediate repetition priming task, Experiment 2: Long-distance repetition priming task). Our main question is: How are sound change pronunciation variants recognized and represented in a Cantonese-English bilingual lexicon? The results of both experiments suggest that [n]- and [l]-initial variants facilitate processing in both short and long-term spoken word recognition. Thus, regular exposure to Cantonese endows bilingual listeners with the perceptual flexibility to dually and gradiently map pronunciation variants to a single lexical representation.

In this study, we examined to what extent cross-linguistic influence is observed in the production of unstressed vowels in Mexican learners of L2 English and L3 Russian. Phonological spectral vowel reduction is a widespread process present in both English and Russian, but not in Spanish. In total, 18 Mexican learners, six American speakers, five Russian speakers and six Mexican speakers performed a delayed word repetition task and a sentence completion task. Euclidean distances and temporal values were measured to assess vowel reduction in 1,192 tokens. Mexican learners showed hybrid values of vowel reduction in both foreign languages: while they tended to use quality cues in the case of the L2, they relied on duration cues in the case of the L3. Our results do not show any direct evidence of cross-linguistic influence of temporal values or vowel quality from the L1 or the L2 on the L3. We examine these findings in light of similar studies and current L3 acquisition models.