Effects of audiovisual perceptual training with corrective feedback on the perception and production of English sounds by Korean learners

Abstract

This paper aims to propose a new audiovisual perceptual training with corrective feedback and compare the results of this training with those of audio only and audiovisual perceptual training. The results are compared in order to see which is more effective in improving the perception and production of English sounds by Korean learners. For this experiment, we selected 6 consonant pairs (i.e., /p-f/, /b-v/, /t-θ/, /l-r/, /s-ʃ/) and 4 vowel pairs (i.e., /i:-ɪ/, /ɛ-ae/, /ɑ:-ʌ/, /ɔ:-oʊ/), which are visually distinguishable from one another but often confused by Koreans. 20 subjects participated in audio only training (A group), 20 subjects in audiovisual training (AV group) and 25 subjects in audiovisual training with corrective feedback (CF group). 8 training sessions, each lasting about 40 minutes, were offered. All the groups showed a significant improvement in the perception of vowels and consonants (i.e., 5.4% and 3.4% improvements for the A group, 7.7% and 3.4% for the AV group, and 11.1% and 4.1% for the CF group). However, only A group showed a significant improvement in the production of vowels (i.e., 7.19% improvement) while only AV and CF groups showed a significant improvement in the production of consonants (i.e. 6.08% and 8.00% improvements for the AV and CF groups, respectively). This paper aims to propose a new audiovisual perceptual training with corrective feedback and compare the results of this training with those of audio only and audiovisual perceptual training. The results are compared in order to see which is more effective in improving the perception and production of English sounds by Korean learners. For this experiment, we selected 6 consonant pairs (i.e., /p-f/, /b-v/, /t-θ/, /l-r/, /s-ʃ/) and 4 vowel pairs (i.e., /i:-ɪ/, /ɛ-ae/, /ɑ:-ʌ/, /ɔ:-oʊ/), which are visually distinguishable from one another but often confused by Koreans. 20 subjects participated in audio only training (A group), 20 subjects in audiovisual training (AV group) and 25 subjects in audiovisual training with corrective feedback (CF group). 8 training sessions, each lasting about 40 minutes, were offered. All the groups showed a significant improvement in the perception of vowels and consonants (i.e., 5.4% and 3.4% improvements for the A group, 7.7% and 3.4% for the AV group, and 11.1% and 4.1% for t...