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LINGUIST List 22.2625

Fri Jun 24 2011

Diss: Lang Acq: Oh: 'The Effect of Age of Acquisition and Second ...'

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        1.     Grace Oh , The Effect of Age of Acquisition and Second Language Experience on Segments and Prosody: A cross-sectional study of Korean Bilinguals' English and Korean production

Message 1: The Effect of Age of Acquisition and Second Language Experience on Segments and Prosody: A cross-sectional study of Korean Bilinguals' English and Korean production
Date: 23-Jun-2011
From: Grace Oh <goh1uoregon.edu>
Subject: The Effect of Age of Acquisition and Second Language Experience on Segments and Prosody: A cross-sectional study of Korean Bilinguals' English and Korean production
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Institution: University of Oregon
Program: Graduate Institute Center for Spoken Language Understanding
Dissertation Status: Completed
Degree Date: 2011

Author: Grace Eunhae Oh

Dissertation Title: The Effect of Age of Acquisition and Second Language Experience on Segments and Prosody: A cross-sectional study of Korean Bilinguals' English and Korean production

Linguistic Field(s): Language Acquisition

Subject Language(s): Korean (kor)

Dissertation Director:
Susan Guion Anderson
Kaori Idemaru
Vsevolod Kapatsinski
Melissa Redford

Dissertation Abstract:

The dissertation investigated segmental and prosodic aspects of first -
(L1) and second language (L2) speech production. Forty Korean-speaking
adults and children varying in L2 experience (6 months - inexperienced vs.
6 years - experienced) as well as twenty age-matched native English
speaking adults and children participated. Experienced children born in the
U.S. were first exposed to English much earlier than inexperienced
children. Group differences were investigated for insight into the effect
of differing language experience on speech production.

For segmental aspects, spectral quality and duration of English and Korean
vowels (Chapter Ⅱ), the effect of English coda consonant voicing on vowel
and consonant closure duration (Chapter Ⅲ), and language-specific voice
onset time (VOT) in English and Korean stops (Chapter Ⅳ) were examined. All
Korean groups except the experienced children differed from the native
English speakers in vowel spectral quality and coda voicing production. The
experienced children showed native-like production of both English and
Korean vowels and also used VOT to distinguish Korean aspirated and English
voiceless stops. These results suggest that the experienced children have
separate phonological representations for their two languages.

For prosodic aspects, stressed and unstressed vowels in English
multisyllabic words (Chapter Ⅴ) and Korean four-syllable phrases (Chapter
Ⅵ) were elicited. The results of stressed and unstressed vowel production
revealed that the Korean adults were able to acquire English prosody in a
native-like manner, except for reduced vowel quality. Contrary to the
little L1-L2 interaction in prosody for adults, Korean experienced
children's production suggested a strong influence of English acquisition
on the development of Korean prosody in terms of fundamental frequency,
intensity, and duration patterns.

Different degrees of L1-L2 interaction between Korean experienced
children's production of segments and prosody are discussed from the
developmental standpoint of simultaneous bilingual children's language
shift from the mother tongue to English. In addition to children's greater
plasticity of language acquisition, external (e.g., peer pressure, language
input) and internal (e.g., ethnic self-identity) factors are likely to have
created a language learning environment different from that of the Korean
adults. As a result, the degree and direction of L1-L2 interaction varied
by linguistic domains, depending on the age of the learner and the language
experience.




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