Copyright © American Speech-Language-Hearing Association From: Using Multiple Measures to Document Change in English Vowels Produced by Japanese, Korean, and Spanish Speakers: The Case for Goodness and Intelligibility Am J Speech Lang Pathol. 2014;23(4):625-640. doi:10.1044/2014_AJSLP-13-0144 Legend: Mean goodness rating of 10 vowels produced by Japanese, Spanish, and Korean speakers before training compared with mean goodness ratings of vowels produced by English speakers. English vowels that are new for English-language learners are represented in bold type. Date of download: 10/2/2017 Copyright © American Speech-Language-Hearing Association