Laboratory Phonology (May 2021)
Transparency, locality, and contrast in Uyghur backness harmony
Abstract
Theories of vowel harmony have wrestled with the formal challenges of transparency, notably the increased expressivity resulting from non-local dependencies. However, experimental work has demonstrated on a number of occasions that ‘transparent’ vowels actually undergo harmony (e.g., Gick, Pulleyblank, Campbell, & Mutaka, 2006), re-establishing the role of locality in the analysis of harmony. Existing work on backness harmony in Uyghur argues that /i/ is transparent to harmony, with some proposing that this falls out from the absence of contrastive /ɯ/ in the language (e.g., Vaux, 2000). This paper examines the distribution of surface [i] and [ɯ] within roots and suffixes to assess their phonological status, as well as their participation in harmony. Results support the case that there are no long-distance dependencies in Uyghur, suggesting that harmony is truly local in the language. Results for root-internal [i] and [ɯ] are less clear; evidence from most speakers supports an allophonic relationship, while some evidence for other speakers suggests the possibility of contrastive /i/ and /ɯ/.
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