The functional phonological unit of Japanese-English bilinguals is language dependent: Evidence from masked onset and mora priming effects

Keisuke Ida, Mariko Nakayama, Stephen J. Lupker

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Speech production research has shown that Japanese monolingual speakers use mora-sized phonological units, not phoneme-sized units, when phonologically encoding Japanese words. Recent bilingual research has indicated that proficient Japanese-English bilinguals nevertheless use phoneme-sized units when phonologically encoding English words, suggesting that use of a phonological unit that is smaller than that of their L1 develops with increasing proficiency in English. The purpose of the present research was to determine whether proficient Japanese-English bilinguals also begin to use the smaller, phoneme-sized units when producing Japanese words. In a masked priming naming task, proficient Japanese-English bilinguals produced a significant masked onset priming effect for English words, confirming that they do use phoneme-sized units when phonologically encoding in English (L2). These bilinguals, however, showed only mora-based facilitation for Japanese words in an experiment involving only Japanese words. These results suggest that proficient bilinguals use different unit sizes depending on the language being produced, and that for bilinguals whose L1 and L2 have different unit sizes, the phonological encoding process is at least somewhat different in their two languages.

Original languageEnglish
Pages (from-to)38-49
Number of pages12
JournalJapanese Psychological Research
Volume57
Issue number1
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

Keywords

  • Japanese-English bilinguals
  • Masked onset and mora priming effect
  • Phonological encoding
  • Phonological unit-size
  • Speech production

ASJC Scopus subject areas

  • Psychology(all)

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