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Oh, Kwan Young. “A study of the distributions and realizations of variants in the English voiceless alveolar stop.” Studies in English Language & Literature. 42.2 (2016): 213-237. The purpose of this study is to analyze the sound distribution of Korean speakers of English in terms of their pronunciations of the voiceless alveolar stop /t/ in six different contexts. We want to identify what kinds of variant sounds of the /t/ in each context were realized and also compare those sounds with the variant sounds of Americans in the same contexts. As a consequence of analyses, we confirmed that Koreans still lacked the knowledge of phonological contexts such as the difference between stressed and unstressed syllables and the relation between variant types and their contexts in which /t/ occurred. Also, we recognized that they pronounced the /t/ as an aspirated sound whenever it preceded a vowel. In addition, an interesting fact observed from Koreans was that the /t/ was realized as several types as in [th], [ɾ], RV(release and vowel insertion), and [d] in the intervocalic(foot-internal) context ((ˈ)V__V), and also in #__(word-initial) context, as in [ts], [t], [t˺], RV, and [·]. Through statistical analyses of R, we recognized that the differences in the measured values of close phase, VOT(Voice Onset Time), and the aggregate of the two between Koreans and Americans were significant. Finally, it was shown that each of the values of close phase, VOT, and the aggregate of the two were affected by both the speakers of the two groups and the contexts of variants through Interaction Plot. (Chonnam National University)