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

  • 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.


Confidence rating;EAI;VAS


  1. Ma, Estella, P. M., & Yiu, Edwin, M. L., "Scaling Voice Activity Limitation and Participation Restriction in Dysphonic Individuals", Folia Phoniatrica et Logopaedica, 59(2), pp.74-82, 2007. DOI:
  2. Eadie, T. L., & Baylor, C. R., "The effect of perceptual training on inexperienced listeners' judgments of dysphonic voice", Journal of Voice, 20(4), pp.527-544. 2006. DOI:
  3. Yiu, E. M., Chan, K. M., & Mok, R. S., "Reliability and confidence in using a paired comparison paradigm in perceptual voice quality evaluation", Clinical Linguistic Phonology, 21(2), pp.129-145. 2007. DOI:
  4. Kreiman, J., Gerratt, B. R., Kempster, G. B., Erman, A., & Berke, G., "Perceptual evaluation of voice quality: Review, tutorial, and a framework for future research", Journal of Speech and Hearing Research, 36, pp.21-40. 1993.
  5. Eadie, T. L., & Doyle, P. H., "Classification of dysphonic voice: Acoustic and auditory-perceptual measures", Journal of Voice, 19(1), pp. 1-14, 2004 DOI:
  6. Eadie, T. L., & Doyle, P. C., "Scaling of voice pleasantness and acceptability in tracheoesophageal speakers", Journal of Voice, 19(3), pp.373-383, 2005. DOI:
  7. Gerratt, B. R., Kreiman, J., Antonanzas-Barroso, N., & Berke, G. S., "Comparing Internal and External Standards in voice quality judgements", Journal of Speech and Hearing Research, 36, pp.14-20. 1993.
  8. Misono, S., Merati, A. L., & Eadie, T. L., "Developing auditory-perceptual judgment reliability in otolaryngology residents", Journal of Voice, 26(3), pp.358-364. 2012. DOI:
  9. Kelchner, L. N., Brehm, S. B., Weinrich, B., Middendorf, J., deAlarcon, A, Levin, L., & Elluru R., "Perceptual evaluation of severe pediatric voice disorders: rater reliability using the consensus auditory perceptual evaluation of voice, Journal of Voice, 24(4), pp.441-449. 2010. DOI:
  10. Awan, S. N., & Lawson, L. L., "The effect of anchor modality on the reliability of vocal severity ratings", Journal of Voice, 23(3), pp.341-352. 2009. DOI: