Repetition of anchor stimuli and nature of vocal samples in the perceptual auditory judgment performed by speech-language pathology students.
Noemi de Oliveira Bispo, Rosiane Yamasaki, Marina Martins Pereira Padovani and 1 others
PMID 35081197WHAT IT FOUND
Repeating voice anchors did not improve students' accuracy in identifying vocal deviations.
It did increase reliability, though values remained low. Accuracy dropped significantly when voices had multiple deviations, with strain being the hardest to judge.
Key findings
01Repeating anchor stimuli did not increase the accuracy of identifying the predominant vocal deviation compared to using them only at the start.
02Students who heard repeated anchors showed higher intra-rater and inter-rater reliability, although the absolute values remained low.
03Accuracy in identifying the main voice problem decreased significantly as the number of vocal dimensions in the sample increased.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study used students with no clinical experience, so findings may not apply to practicing clinicians. Reliability values in the repetition group were still low, suggesting anchor repetition alone is insufficient for robust perceptual training. The task involved sustained vowels, which may not reflect the complexity of connected speech often used in clinical assessment.
The easy way to misread this
Do not assume that repeating anchor stimuli will make students better at identifying voice problems. While it improved their consistency, their overall accuracy did not improve compared to using anchors only once.