This dissertation examines the influence of L2 orthographic representation on the phonological development of American English speakers learning Korean, addressing specifically the syllabification and resyllabification of Korean intervocalic obstruents and the intervocalic liquid phoneme. Although Korean and English both employ alphabetic writing systems, the Roman alphabet used by English is strictly linear whereas the letters of the Korean alphabet, "Hangeul," are arranged in syllabic units at the morphemic level. Intervocalic consonants can be presented in two different ways in "Hangeul": (i) in the coda position followed by a vowel, and (ii) in the onset position following the preceding syllable which ends in a vowel. The orthographic representation of the former is "deeper" than the latter in the sense that the consonant's syllabic representation as final in orthography conflicts with its manifestation as initial in speech. The results of both production and transcribing tasks reported in the dissertation show that L2 learners of Korean perform better in general with stimuli which match up surface syllables and written syllables. However, except for dentals, differences in correct production between a beginning learner group and the advanced learner group were not significant. With respect to the Korean liquid /L/, which varies allophonically between [l] and [/J/] (in English these two sounds express different phonemes, [l] as an allophone of /l/ and [/J/] as a manifestation of /t/ and /d/), L2 learners tend to convert grapheme to phoneme based on the structure of the NL, syllabifying the segment as it is presented orthographically rather than as required by the phonological rules of Korean. In all, the results from the two experiments confirm that L2 learners convert graphemes to phonemes directly in a manner consistent with a shallow relation between Korean orthography and pronunciation, preferentially applying the principles of L1 orthography and phonology when reading L2 words. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]