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Baker, Wendy; Trofimovich, Pavel; Flege, James E.; Mack, Molly; Halter, Randall – Language and Speech, 2008
This study evaluated whether age effects on second language (L2) speech learning derive from changes in how the native language (L1) and L2 sound systems interact. According to the "interaction hypothesis" (IH), the older the L2 learner, the less likely the learner is able to establish new vowel categories needed for accurate L2 vowel production…
Descriptors: Age Differences, Adults, Children, Phonology