The Effect of Second Language Immersion Experience on the Perception of VOT by Saudi Arabic Learners of English

Increased experience with a second language (L2) can affect one’s speech perception and production. Some studies have suggested that experience does not affect the production of English bilabial stops by Arabic speakers. They produce the English bilabial stops /p/ and /b/ as the Arabic /b/, which differs in VOT. However, the effect of English experience on the perception of English bilabial stops remains underinvestigated. This study examines the effect of L2 immersion experience on the perception of the English stops /p/–/b/ to investigate whether the lack of /p/ in Arabic can affect the perception of the /p/–/b/ contrast and whether L2 experience shifts the category boundary toward that of native speakers. Sixtysix participants, comprising two groups of Arabic speakers with differing L2 experience and a control group of native English speakers, completed identification and discrimination tasks using the /p/–/b/ VOT continuum. The regression analysis showed that listeners with more L2 experience (i.e., ≥3 years in the UK) had a closer category boundary to that of native listeners than those with less L2 experience. However, category discrimination accuracy did not differ significantly between the Arabic groups. The results highlight the importance of L2 immersion experience in altering VOT perceptual strategies, which can help in designing future training studies that focus on VOT perception as an L2 phonetic cue.