Morrison, Geoffrey2015-12-100023-8309http://hdl.handle.net/1885/54325L1-Spanish learners of English have been reported to distinguish English /i/ and /I/ on the basis of duration cues, whereas L1-English listeners primarily use spectral cues. Morrison (2008a) hypothesized that duration-based perception is a secondary developmental stage that emerges from an initial stage of multidimensional-category-goodness assimilation of tokens of English /i/ and /I/ to Spanish /i/, with English vowel tokens perceived to be good examples of Spanish /i/ labeled as English /I/ and poor examples labeled as English /i/.Keywords: English as a Second Language Learning (22130); Sound Duration (Phonetics) (80400); Spanish (81800); Speech Perception (82700); Vowels (95650); adolescent; adult; article; female; human; language; learning; male; middle aged; phonetics; probability; speech English; L2 vowel perception; SpanishL1-Spanish Speakers' Acquisition of the English /i/-/I/ Contrast II: Perception of Vowel Inherent Spectral Change200910.1177/00238309093365832016-02-24