Purpose: Verify the effect of anchor repetition in the perceptual auditory judgement of the type of vocal deviation performed by speech-language pathology (SLP) students; analyze the correlation between the amount of different vocal dimensions in the same stimuli and accuracy; investigate the correlation between type of vocal deviation and accuracy.
Methods: 54 SLP students were divided in two groups: Group with repetition (GwR), 28 students; and, Group with no repetition (GnR), 26 students. The analyzed sample counted with 220 dysphonic human voices, vowel /ε/. The GwR heard three anchor stimuli before the judgement and every 20 voices during the assessment. The GnR heard the anchor only before beginning the judgement. The anchor stimuli counted with one rough, one breathy and one strain voice. These classifications were compared with reference judgements from three expert SLPs. The intra and inter-rater reliability, the correlation between the amount of different vocal dimensions in the same stimuli and type of vocal deviation with accuracy were assessed.
Results: The accuracy between type of deviation was similar among groups. The GwR presented slightly higher intra and inter-rater reliability. The student's accuracy was inversely proportional to the amount of different vocal dimensions in the stimuli. Breathiness presented the highest accuracy and strain presented the lowest accuracy.
Conclusion: The repetition of anchor stimuli improved intra and inter-rater reliability. However, it was not effective in the accuracy of the type of vocal deviation. The amount of different vocal dimensions in the stimuli have influence in the students' accuracy.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9886121 | PMC |
| http://dx.doi.org/10.1590/2317-1782/20212021064 | DOI Listing |
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