Processing of English Coda Laterals in L2 Listeners: An Eye-Tracking Study.
Yizhou Wang
PMID 37897248WHAT IT FOUND
Mandarin-speaking English learners found the 'l' sound at the end of syllables hardest after back vowels.
In a word-label task, they often heard it as part of the vowel, even when they could match pairs in a simpler task.
Key findings
01In the matching-pairs task, accuracy was 99.0% for front, 97.7% for central, 99.7% for control, and 59.9% for back vowel /l/ contrasts.
02In the identification task, accuracy was 99.8% for front vowel /l/, 78.3% for central, and 61.6% for back.
03Eye-tracking showed similar looking behaviour for central and back vowel /l/ contrasts, but the paper warns that the small sample may explain this similarity.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
Only 16 university students took part, all without speech or hearing disorders, so it does not show what happens in clients with communication difficulties. The study used made-up words and one speaker, so everyday speech may not behave the same way. Two participants' eye-tracking records were excluded because the recording quality was poor. The similar eye-tracking pattern for central and back vowels could be due to low statistical power rather than true similarity. The tasks tested perception of laboratory speech contrasts, not therapy outcomes or functional communication.
Declared interests
The authors reported no financial support for the research, authorship, or publication.
The easy way to misread this
Do not read this as showing that Mandarin-speaking clients cannot hear English coda /l/. The difficulty was strongest after back vowels and task-dependent, and the participants were university students without speech or hearing disorders.