SLPPilotJournal of voice : official journal of the Voice Foundation2024

Cognitive Mechanisms in Pediatric Voice Therapy - An Initial Examination.

Hagar Feinstein, Ümit Daşdöğen, Melissa E Libertus and 4 others

PMID 34750034

WHAT IT FOUND

In six children with voice nodules or edema, better scores on some thinking, motor, and memory tasks were linked to greater voice improvement after therapy, but some links ran the other way.

The tiny sample makes this a question to test, not proof.

Key findings

01Better performance on Inhibition, Fingertip Tapping, Design Fluency, and Narrative Memory was associated with improved perceptual voice outcomes.

02After age was accounted for using scaled scores, better Design Fluency, dominant-hand Fingertip Tapping, and Narrative Memory scores were linked to better voice outcomes, while poorer Auditory Attention was linked to better voice change.

03Age was correlated with performance on all cognitive subtests and with perceptual voice outcomes, but not with the acoustic CSID change.

STILL TO COME

How it was doneWhat they foundWhat it means for SLPs

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What it does not show

Only six children were included, and the authors did not perform inferential statistical tests, so the reported links are descriptive and may not hold in a larger group. All children received the same Adventures in Voice therapy, with no untreated or alternative therapy comparison, so the study cannot show what caused the voice changes. The correlations cannot show that any cognitive skill caused better voice outcomes, because cognition was measured before therapy and voice change was measured after therapy. The youngest child completed only Visuomotor Precision and Narrative Memory, so that child's cognitive data were not comparable with the other children's data. Perceptual ratings of resonance had only moderate intra-rater reliability, so resonance ratings were less stable than severity ratings. Cognitive abilities were measured as separate subtests rather than as an integrated set, so the study cannot explain how attention, memory, motor skill, and executive function work together during voice learning. The sample was limited to typically developing children who spoke English, had normal hearing, and had benign phonotraumatic lesions, so the findings may not apply to children with other voice disorders, hearing loss, medical conditions, or language difficulties. The voice therapy program used in the study was developed by the last author, and the therapists were trained in that program, which may affect how the treatment was delivered and interpreted.

Declared interests

The supplied text does not state current study funding or a conflict-of-interest declaration. The Adventures in Voice program was developed by the last author, and the four clinicians who delivered therapy were trained in that program. A larger study mentioned as underway is funded by NIH and lists the last author as principal investigator.

The easy way to misread this

Do not conclude that cognitive testing should guide pediatric voice therapy or that any cognitive skill caused better voice outcomes. This was a six-child proof-of-concept, and the authors did not run inferential tests, had no comparison group, and found mixed correlations, including poorer auditory attention linked to better voice change.

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