L1 phoneme distributional features influence L2 perception

A new study from our laboratory shows that, for adult second-language learners in a formal setting, audiovisual stimuli do not lead to any improvement in the discrimination of non-native phonemes. High-quality audio stimuli alone are sufficient. Furthermore, we demonstrate that the processes involved in discriminating second-language sounds are influenced by the phonological properties of the native language.

https://www.sciencedirect.com/science/article/abs/pii/S0095447026000744