Na1c0014 李羿霈. An acoustic perspective of English vowel production and perception by Taiwanese...
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Phonological constraints as filters in second language acquisition: An
empirical study on vowel production and perception.
Na1c0014 李羿霈
An acoustic perspective of English vowel production and perception by Taiwanese EFL learners, as compared with native speakers of English.
It aims to explore the issue of phonological constraints as filters in second language acquisition.
Introduction
L2 learners are confronted with certain problems in L2 speech learning.
Linguistic factors as L1 influence and similarity effect help account for the perceived accent.
By Optimality Theory, it aims to demonstrate the phonological constraints as filters in second language acquisition and to elaborate the issue of learnability for the English learners in Taiwan.
Background of the study
English speaking and listening are the mail skills for the beginners of English(MOE, 2001).
Students in Taiwan, have some problems in pronunciation and perception of English sounds.
Students are unable to discriminate vowels with accuracy, like tense vowels/ i, u, ow/ and lax vowels/Ԑ,ᴐ/.
Motivation
Acoustic measurements of perception and production
Productive as well as perceptual vowel space as a reflection of learners’ interlanguage
A close link between perception and production
The application of OT in SLA
Four key assumptions
It aims to investigate the relationship between production and perception of American English vowels by Taiwanese EFL students and to elaborate the issue of learnability in the sense of OT.
Purposes
To what extent English vowel production by TS differ from that by NS in terms of mean acoustic values in vowels?
To what extent does English vowel perception by TS differ from that by NS in terms of mean synthesized acoustic values in vowels?
To what extent does English vowel production-perception asymmetry by TS differ form that by NS in terms of mean acoustic values in vowels?
To what extent can OT account for the issue of learnability in the empirical findings in English vowel production and perception by TS?
Research Questions
Second language acquisition Interlanguage Acoustic Phonetics Vowel Quality Vowel Normalization Optimality Theory(OT) Production and perception of vowels
Terms of Definition
Southern Min, Mandarin and English Tenseness feature and the backness feature
in different vowel systems
Phonological comparison
Literal Review Chung(1996, 2002, 2006) proclaims,
sgnificant similarities as well as differences among these three languages can be observed in terms of the two features: [+/-back] and [+/- high]
English diphthongs refers to the tongue position during the vowel articulation
To aquire the English or Mandarin diphthongs,
violate the Southern Min patterns.
sixty Taiwanese EFL students were bilinguals with Southern Min and Mandarin
a) HEFL-30 English majors in National Kaohsiung Normal University
b) LEFL-30 students of 12th grade in Chien-Chen Senior High School in Kaohsiung
Twenty native speakers of American English
Subjects-Participants
A production experiment(Appendix A)
A perception experiment(Appendix B)
A questionnaire(Appendix D)
Subjescts-Instruments
The questionnaire was gathered by group meetings, in which the general English proficiency test was also conducted.
As for the production experiment and individual perception experiment, they were done by individual interviews and tape-recording.
PRAAT program, ACCESS program, EXCELL and SPSS software were utilized in it.
Subjects- Procedures
Interlanguage production vs. interlanguage perception
LEFL learners were interfered more by L1. In HEFL pronunciation of similar English vowels, there was less deviance from NS English production than from their L1 correspondent production.
Less similarity effect was identified in the perception task.
Conclusions
Compared with NS, TS exhibited a greater degree of within-group production- perception asymmetry
OT, is supported both at the phonological level and at the phonetic level. At the phonological level, variability among the production and perception grammars could be respectively modeled by different rankings of the same phonological constraint sets.
Conclusions