청력을 평가하는 일반적인 방법으로 순음청력검사(pure tone audiometry)와 어음청력검사(speech audiometry)가 있는데, 순음을 사용하는 순음청력검사는 사람의 청각민감도(hearing sensitivity)에 대해서 대략의 정보를 제공하지만, 실생활에서 말소리를 듣고 이해하는 능력을 측정하는 수단으 로서는 한계가 있다. 그러므로 어음을 이용한 청력검사는 난청인의 청력에 대해 종합적인 듣기 능력 평가의 중요한 정 보를 준다. 또한, 심리음향학은 심리물리학의 한 분야이다. 심리물리 학은 물리적 자극을 제시하고 그에 따른 인간의 감각 인지적
The purpose of this research was to investigate psychometric functions with monitored live voice and taped presentation of one syllable words for hearing impaired adults. The psychometric functions were also examined with respect to the degree of hearing loss. The data were obtained from 20 ears of hearing impaired adults aged between 37 and 88 (M=70.2 years). Their hearing thresholds ranged from 40 dB HL to 90 dB HL (M=62.3 dB HL). The newly developed Korean word list, which was consisted of 50 one-syllable words, was presented from 0 dB SL upto 40 dB SL or UCL with 10 dB. The results showed that there was no statistically significant difference of word recognition scores between MLV and CD data (F(1,3)=1.235, p>0.05). However, meaningful differences were identified between the groups with lower versus higher hearing sensitivity (F(1,3)=26.215, p<0.05) without a significant interaction effect regarding the stimulus presentation level. In conclusion, this research suggests that one-syllable words may be presented either in MLV or in CD to hearing impaired adults for the word recognition test. However, more data based on the standardized test procedures are needed before the clinical utilization. KEY WORDS：Psychometric function·Speech recognition test·Monitored live voice (MLV).
INTRODUCTION MATERIALS AND METHODS RESULTS DISCUSSIONS CONCLUSIONS REFERENCES
