Date of Degree
PhD (Doctor of Philosophy)
The two glides w and j exist in both English and Korean. In English, these two glides form syllable-initial glide-vowel (GV) sequences with any of the following twelve vowels (i, ɪ, eɪ, ɛ, ʌ, ə, œ, u, ʊ, oʊ, ɔ, a). In Korean, assuming seven monophthongs (i, e, ə, ɨ, u, o, a), fourteen GV sequences are logically possible, but only nine occur; the following five GV sequences are absent: *ji, *jɨ, *wu, *wɨ, *wo. Researchers who have proposed phonological explanations for this gap unanimously point to the homorganicity between the two segments in these absent sequences. In English, however, homorganicity seems to be disregarded; five GV sequences--GV[HO] sequences--consist of homorganic segments: wu, ji, wʊ, jɪ, wo. This difference in phonotactics between the two languages constitutes the source of difficulty for Korean ESL learners in mastering the L2 glides and GV[HO] sequences.
In this study, I first provide detailed phonological and phonetic characterizations of glides. I review phonological representations of glides, as well as corresponding high vowels. Then, I perform a series of acoustic analyses of a set of production data collected from Korean and English monolingual speakers. The acoustic parameters under analysis include the first three formants (F1-F3) and the duration of the glide steady state and the glide-to-vowel transition. These analyses reveal that the F2 of English [w] is consistently lower than that of any of the twelve vowels, while the F2 of Korean [w] depends significantly on the quality of the following vowel. Also, English glides exhibit considerably longer steady state durations compared to Korean glides.
Next, I analyze the learners' production data, collected from twenty-two Korean ESL learners. The L2 data reveal that the learners resorted to a few major repair strategies for target GV[HO] sequences, while the vast majority of the non-homorganic GV sequences (GV[N-HO]) are produced target-appropriately. Among these repair strategies, 79% were glide deletion (wound → [und]/[ʔund]), 20% vowel shift (wound → [wənd]), and 1% glide shift (yip → [wɪp]). Interestingly, however, in their L2 glides, many of the learners showed a departure from monolingual Korean glides in the F2 of [w] and the duration of the steady state.
Lastly, an Optimality Theoretic account is proposed for the learners' L2 data. Under the assumption that GV[HO] sequences are marked relative to GV[N-HO] sequences (Kawasaki 1982), I argue that learning English GV[HO] sequences by Korean ESL learners involves constraint reranking, crucially, demotion of a set of markedness constraints below a set of competing faithfulness constraints.
One of the components of a foreign accent is the speaker’s inappropriate production of the target language speech sounds. A major source of this problem is the phonology of the speaker’s native language that interferes with the acquisition of the target language. For Korean ESL (English as a Second Language) learners, a number of English speech sounds are problematic to learn; among them are the two glide sounds, [w] and [j], which resemble the following high vowels, [u] and [i], respectively. Korean also has [w] and [j] and the two similar high vowels, [u]/[i]. The difference between the two languages is that while Korean does not permit sequences of a glide followed by a similar vowel (GV sequences) such as wu and ji, English does permit these sequences as in “wound [wund]” and “yeast [jist].” The question is that whether or not Korean ESL learners will pronounce English [wu] and [ji] sequences appropriately.
In order to answer the question, I tape-recorded a group of Korean ESL learners, as well as two groups of monolingual speakers: native speakers of Seoul Korean and native speakers of Midwestern American English. Findings of this study include the learners’ frequent target-inappropriate production of the target English GV sequences. In many cases, the learners delete the glide (e.g, wu→u) or change the vowel quality (e.g, ji→je). Also, differences between the glides of the two monolingual groups include that (a) the duration of English glides is greater than that of Korean glides, (b) English [w] is acoustically consistent, while Korean [w] varies greatly depending on the following vowel.
publicabstract, English, Glides, Korean, Phonetics, Phonology, SLA
xv, 212 pages
Includes bibliographical references (pages 199-212).
Copyright 2014 Sang Kyun Kang