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http://dx.doi.org/10.13064/KSSS.2015.7.1.057

The final stop consonant perception in typically developing children aged 4 to 6 years and adults  

Byeon, Kyeongeun (한림대 보건과학대학원 언어병리학과)
Ha, Seunghee (한림대학교 언어청각학부 청각언어연구소)
Publication Information
Phonetics and Speech Sciences / v.7, no.1, 2015 , pp. 57-65 More about this Journal
Abstract
This study aimed to identify the development pattern of final stop consonant perception using the gating task. Sixty-four subjects participated in the study: 16 children aged 4 years, 16 children aged 5 years, 17 children aged 6 years, and 15 adults. One-syllable words with consonant-vowel-consonant(CVC) structure, mokㄱ-motㄱ and papㄱ-patㄱ were used as stimuli in order to remove the redundancy of acoustic cues in stimulus words, 40ms-length (-40ms) and 60ms-length (-60ms) from the entire duration of the final consonant were deleted. Three conditions (the whole word segment, -40ms, -60ms) were used for this speech perception experiment. 48 tokens (4 stimuli ${\times}3$ conditions ${\times}4$ trials) in total were provided for participants. The results indicated that 5 and 6 year olds showed final consonant perception similar to adults in stimuli, papㄱ-patㄱ and only the 6-year-old children showed perception similar to adults in stimuli, 'mokㄱ-motㄱ. The results suggested that younger typically developing children require more acoustic information to accurately perceive final consonants than older children and adults. Final consonant perception ability may become adult-like around 6 years old. The study provides fundamental data on the development pattern of speech perception in normal developing children, which can be used to compare to those of children with communication disorders.
Keywords
speech perception; final stop consonant; redundancy of acoustic cue; typically developing children;
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