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Realizations of /r/ in Japanese Talk-in-Interaction

The phonetic variability of Japanese /r/ is well known, but perhaps less-well accounted for in a quantitative way. This paper presents an initial sociophonetic study of one speaker’s /r/s produced during conversation with both a known and an unknown interlocutor. Contrary to expectation, more reduced forms (lateral and retroflex approximants) were produced in the unknown condition. Phonological and morphological factors conditioning /r/ variation are also discussed.