The multidimensional nature of hyperspeech: evidence from Japanese vowel devoicing.

Journal Article (Journal Article)

We investigate the hypothesis that infant-directed speech is a form of hyperspeech, optimized for intelligibility, by focusing on vowel devoicing in Japanese. Using a corpus of infant-directed and adult-directed Japanese, we show that speakers implement high vowel devoicing less often when speaking to infants than when speaking to adults, consistent with the hyperspeech hypothesis. The same speakers, however, increase vowel devoicing in careful, read speech, a speech style which might be expected to pattern similarly to infant-directed speech. We argue that both infant-directed and read speech can be considered listener-oriented speech styles-each is optimized for the specific needs of its intended listener. We further show that in non-high vowels, this trend is reversed: speakers devoice more often in infant-directed speech and less often in read speech, suggesting that devoicing in the two types of vowels is driven by separate mechanisms in Japanese.

Full Text

Duke Authors

Cited Authors

  • Martin, A; Utsugi, A; Mazuka, R

Published Date

  • August 2014

Published In

Volume / Issue

  • 132 / 2

Start / End Page

  • 216 - 228

PubMed ID

  • 24813573

Electronic International Standard Serial Number (EISSN)

  • 1873-7838

International Standard Serial Number (ISSN)

  • 0010-0277

Digital Object Identifier (DOI)

  • 10.1016/j.cognition.2014.04.003


  • eng