난청의 정도와 유형에 따라 난청자에게 전달되는 가청 정보가 상이하게 다를 수 있으므로 이에 따른 어음인지능 력 및 오류결과에 관한 다양한 연구가 이루어졌다. 문장이 아닌 단음절을 사용하여 인지도를 측정할 경우 문맥적 영 향이 어음인지능력에 미칠 수 있는 가능성이 적고, 청자군 간 비교, 특정 자음이나 모음에 대한 분석, 오류유형, 조음 방법이나 위치 등을 확인하여 개인별 오류패턴을 분석할 수 있는 장점이 있다(Danhauer et al., 1986; Edgerton & Danhauer, 1979). 특히 Butts et al.(1987)은 난청 정 도가 고심도가 아닌 중고도 난청 이하일 경우 무의미음절 인지측정을 통해 의사소통 어려움을 양적으로 측정하고 보 장구 적합 후 어떤 인지오류가 얼마나 감소하는지 확인하 고 상담할 수 있어 그 임상적 유용성이 크다고 설명하였다.
hearing loss. A male and a female talker recorded 95 consonant-vowel (CV) and 35 vowel-consonant (VC) syllables (a total of 130 monosyllables) and all the syllables were presented at 65 dB SPL without background noise. As results, the monosyllable performance was compared between two listener groups or by target-talker gender, and we additionally investigated whether the recognition errors were influenced by error type, vowel context, and consonant features (articulation place or manner). Several findings were observed as follows. First, overall the gender of target talker did not influence listener's performance. Although the two groups did not differ in identifying CV syllables, the listeners with flat hearing loss had more errors for the VC syllables compared to the sloping group. Especially, individual differences of both CV and VC errors seemed to be relatively large for both groups, yet the differences were not correlated with listener's pure tone thresholds. This suggests a difficulty predicting the monosyllable errors by hearing loss configuration alone. Second, the most common error types were the substitution of the initial consonants in the CV syllables and the substitution of the final consonants in the VC syllables. Third, listeners recognized the final consonants more accurately within the /a/ vowel context compared to the other vowels whereas the performance with the /i/ and /e/ vowel contexts was relatively lower. Finally, both listener groups exhibited the lowest scores for stop consonants in the manner analysis, and the lowest scores for alveolar consonants in the place analysis.
INTRODUCTION MATERIALS AND METHODS RESULTS DISCUSSIONS AND CONCLUSIONS CONCLUSIONS REFERENCES
