Effects of EAI and VAS on perceptual judgement and confidence rating by listeners for voice disorders

청지각적 평가 방식에 따른 음성장애 심한 정도 판단과 자가 신뢰도에 대한 차이

  • Lee, Ok-Bun (Dept.of Speech and Language Therapy, Daegu Cyber University) ;
  • Kim, Sun-Hee (Division of Health, Keimyung College University) ;
  • Jeong, Hanjin (Dept. of Communication Disorders, Hyejeon College)
  • 이옥분 (대구사이버대학교 언어치료학과) ;
  • 김선희 (계명문화대학교 보건학과) ;
  • 정한진 (혜전대학교 언어재활과)
  • Received : 2014.04.07
  • Accepted : 2014.05.08
  • Published : 2014.05.31


The purpose of the present study was to evaluate the effect of 7-point interval scale(EAI) and visual analogue scale(VAS) on perceptual judgement and the reliability of severity on voice problems by dysphonic speakers. 30 undergraduate students studying communication disorder were enrolled in the perceptual evaluation. Those listeners judged overall voice severity within the anchored(condition 1) and non-anchored scales(condition 2) for vowel prolongation and reading tasks by 25 speakers with voice disorder. The results of this study showed that the scores by VAS was significantly higher than EAI in both condition 1 and condition 2 for vowel prolongation and reading task. However, the scores by EAI method was higher than by VAS method on voice severity of vowel prolongation (condition 1) and reading task(condition 2). These results suggest auditory-perceptual scaling procedures must be more studied in the aspects of clinical application of voice disorder.


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