A Multidimensional Scaling Study of Native and Non-Native Listeners' Perception of Second Language Speech.

Second language speech learning is predicated on learners' ability to notice differences between their own language output and that of their interlocutors. Because many learners interact primarily with other second language users, it is crucial to understand which dimensions underlie the perception of second language speech by learners, compared to native speakers. For this study, 15 non-native and 10 native English speakers rated 30-s language audio-recordings from controlled reading and interview tasks for dissimilarity, using all pairwise combinations of recordings.