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Auditory speech is difficult to discern in degraded listening conditions, however the addition of visual speech can improve perception. The Perceptual Assimilation Model [1] suggests that non-native contrasts involving a native phonological difference (two-category assimilation) should be discriminated more accurately than those involving a phonetic(More)
Native language experience strongly influences non-native speech discrimination. According to the Perceptual Assimilation Model (PAM) [1], discrimination is most accurate when two non-native sounds map onto different native phonemes (Two-Category assimilation), poorer when they differ in goodness-of-fit to the same native phoneme (Category-Goodness(More)
Discriminating between certain non-native contrasts can be difficult. The Perceptual Assimilation Model [1] predicts that when two non-native phones are assimilated to the same native language category, as equally good or poor versions, discrimination should be poor (a single-category assimilation). However, it is not known to what extent visual and/or(More)
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