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KMID : 1022420150070010057
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Phonetics and Speech Sciences
2015 Volume.7 No. 1 p.57 ~ p.65
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The final stop consonant perception in typically developing children aged 4 to 6 years and adults
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Byeon Kyeong-Eun
Ha Seung-Hee
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Abstract
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This study aimed to identify the development pattern of final stop consonant perception using the gating task. Sixty-foursubjects participated in the study: 16 children aged 4 years, 16 children aged 5 years, 17 children aged 6 years, and 15adults. One-syllable words with consonant-vowel-consonant(CVC) structure, mokㄱ-motㄱand papㄱ-patㄱ were used as stimuli inorder to remove the redundancy of acoustic cues in stimulus words, 40ms-length (-40ms) and 60ms-length (-60ms) from theentire duration of the final consonant were deleted. Three conditions (the whole word segment, -40ms, -60ms) were used forthis speech perception experiment. 48 tokens (4 stimuli x 3 conditions x 4 trials) in total were provided for participants. Theresults indicated that 5 and 6 year olds showed final consonant perception similar to adults in stimuli, papㄱ-patㄱ and onlythe 6-year-old children showed perception similar to adults in stimuli, 'mokㄱ-motㄱ. The results suggested that youngertypically developing children require more acoustic information to accurately perceive final consonants than older children andadults. Final consonant perception ability may become adult-like around 6 years old. The study provides fundamental data onthe development pattern of speech perception in normal developing children, which can be used to compare to those ofchildren with communication disorders.
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KEYWORD
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speech perception, final stop consonant, redundancy of acoustic cue, typically developing children
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