Journal
PLOS ONE
Volume 10, Issue 11, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0142896
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Funding
- National Academy of Education
- Early Career Scheme (ECS) of the Hong Kong Government Research Council [27402514]
- Seed Grant Programme for Basic Research [201210159050]
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This study investigated the similarities and differences in perception of Cantonese tones and English stress patterns by Cantonese-English bilingual children, adults, and English monolingual adults. All three groups were asked to discriminate pairs of syllables that minimally differed in either Cantonese tone or in English stress. Bilingual children's performance on tone perception was comparable to their performance on stress perception. By contrast, bilingual adults' performance on tone perception was lower than their performance on stress perception, and there was a similar pattern in English monolingual adults. Bilingual adults tended to perform better than English monolingual adults on both the tone and stress perception tests. A significant correlation between tone perception and stress perception performance was found in bilingual children but not in bilingual adults. All three groups showed lower accuracy in the high rising-low rising contrast than any of the other 14 Cantonese tone contrasts. The acoustic analyses revealed that average FO, FO onset, and FO major slope were the critical acoustic correlates of Cantonese tones, whereas multiple acoustic correlates were salient in English stress, including average FO, spectral balance, duration and intensity. We argue that participants' difficulty in perceiving high rising-low rising contrasts originated from the contrasts' similarities in FO onset and average FO; indeed the difference between their major slopes was the only cue with which to distinguish them. Acoustic-perceptual correlation analyses showed that although the average FO and FO onset were associated with tone perception performance in all three groups, FO major slope was only associated with tone perception in the bilingual adult group. These results support a dynamic interactive account of suprasegmental speech perception by emphasizing the positive prosodic transfer between Cantonese tone and English stress, and the role that level of bilingual language experience and age play in shaping suprasegmental speech perception.
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