Age of Acquisition Effect on Speech Perception in Noise (SPIN): Data from heritage speakers of Korean
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This study investigates heritage speakers’ speech perception in noise(SPIN) compared with second language (L2) learners and native speakersof Korean. It has been found that speech perception in an acousticallydegraded condition is more difficult for L2 learners than for nativespeakers of language (e.g., Mayo, Florentine, and Buus, 1997; Shi, 2010)even at the high level of proficiency of L2. In particular, Age of Arrival(AoA) was one of the most important factors affecting speech perceptionin noise among others. This study extends this line of research todifferent L2, Korean and to different learner population, heritagespeakers. The results of SPIN test with 32 heritage speakers of Korean,20 non-heritage L2 learners of Korean, and 14 native controls revealed(i) that there was no correlation between SPIN and overall proficiency,(ii) all the groups did better in a low noise condition than at a high noisecondition, but (iii) that heritage speakers were not affected by noise levelso much as L2 learners and native speakers. Overall, heritage speakers’performance was better than L2 learners’ in SPIN. These findings indicatethat early exposure, even if limited, to the second language has apositive effect on speech perception in noise in the language.
Abstract
This study investigates heritage speakers’ speech perception in noise(SPIN) compared with second language (L2) learners and native speakersof Korean. It has been found that speech perception in an acousticallydegraded condition is more difficult for L2 learners than for nativespeakers of language (e.g., Mayo, Florentine, and Buus, 1997; Shi, 2010)even at the high level of proficiency of L2. In particular, Age of Arrival(AoA) was one of the most important factors affecting speech perceptionin noise among others. This study extends this line of research todifferent L2, Korean and to different learner population, heritagespeakers. The results of SPIN test with 32 heritage speakers of Korean,20 non-heritage L2 learners of Korean, and 14 native controls revealed(i) that there was no correlation between SPIN and overall proficiency,(ii) all the groups did better in a low noise condition than at a high noisecondition, but (iii) that heritage speakers were not affected by noise levelso much as L2 learners and native speakers. Overall, heritage speakers’performance was better than L2 learners’ in SPIN. These findings indicatethat early exposure, even if limited, to the second language has apositive effect on speech perception in noise in the language.
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