This paper offers an account for the cross-linguistic prevalence of phonological word-final vowel shortening, in the face of phonetic final lengthening, also commonly observed across languages. Two contributing factors are hypothesized: (1) an overlap in the durational distributions of short and long vowel phonemes across positions in the utterance can lead to the misidentification of phonemic vowel length and (2) the direction of bias in such misidentification is determined by the distributional properties of the short and long vowel phonemes in the region of the durational overlap. Because short vowel phonemes are typically more frequent in occurrence and less variable in duration than long vowel phonemes, long vowel phonemes are more likely to be misidentified than short vowel phonemes. Results of production and perception studies in Tokyo Japanese support these hypotheses.Satsuki Nakai: Queen Margaret University. E-mail: satsuki@ovod.net
IntroductionFinal lengthening, i.e., phonetic lengthening of final elements of prosodic constituents such as the phrase and utterance, is a putative language universal found in many languages, including languages with phonemic vowel length contrasts such as Dinka (Remijsen and Gilley 2008), Estonian (Krull 1997), Finnish (Nakai et al. 2009), and Hungarian (Hockey andFagyal 1999;White and Mády 2008). Curiously, in many languages with a phonemic vowel length contrast, word-final vowel length neutralization is also commonly observed towards the short vowel phoneme (see, e.g., Buckley 1998; Myers and Hansen 2007). Myers and Hansen (2007) ask how such length neutralization often arises in the face of crosslinguistically prevalent phonetic final lengthening. Why do word-final vowels tend to be neutralized towards the short vowel phoneme if they are often in a position to be lengthened phonetically? As a solution to the apparent paradox, Myers and Hansen (2007) propose that utterance-final devoicing, reported for Unauthenticated Download Date | 5/11/18 8:46 PM 514 Satsuki Nakai various languages, may be responsible for the cross-linguistic tendency for phonological word-final vowel shortening. Myers and Hansen's (2007) proposal is based on their finding that the devoiced ending of a partially devoiced vowel is disregarded by the listener in phonemic length identification, producing perceptual shortening. This scenario may be a likely one for some languages that exhibit phonological word-final shortening, but not all, e.g., Tokyo Japanese, as we see below.In this paper, I will present an alternative account to Myers and Hansen's (2007) for the apparent paradox between the cross-linguistic tendency for phonetic final lengthening and phonological word-final vowel shortening. I will argue that the paradox is resolved by postulating two hypotheses:H1: Short and long phonemes of similar durations across positions in the utterance can produce perceptual ambiguity for these phonemes. H2: When phonemic length misidentification occurs due to distributional overlap in the durations...