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This project examines how specific and/or generalizable accent adaptation is after different types of training. Previous work has shown that there is a benefit for generalization of learning with exposure to multiple talkers and/or multiple accents, but work has not investigated where there is a cost for the specificity of learning.

In this study, we examine how lexical predictability may differ between speech to native and non-native listeners. Some previous studies have suggested that speech to non-native listeners may share some properties with infant-directed speech, including slower speaking rates, higher intensity and greater fundamental frequency range. However, it is unclear whether other factors, such as lexical predictability are modulated in speech to non-native listeners. In this study, we specifically ask whether lexical sophistication and lexical diversity differ in speech from a native speaker to either another native interlocutor or to a non-native interlocutor.