Computer-assisted challenge point intervention for residual speech errors.
Tara McAllister, Elaine R Hitchcock, Jose A Ortiz
PMID 35493921WHAT IT FOUND
Five children with persistent rhotic errors showed highly variable responses to computer-adapted biofeedback.
Two made large gains, but three showed little or no improvement in spontaneous speech despite high accuracy during practice. The software aids tracking but does not guarantee generalization.
Key findings
01Participants showed highly variable generalization, with two achieving large effect sizes and one showing a net loss in accuracy despite consistent performance in the clinic.
02High accuracy during treatment sessions did not ensure transfer to spontaneous speech, as some participants reverted to baseline errors when biofeedback was unavailable.
03The free software automatically adjusts task difficulty and tracks progress, which may support clinician workflow and client motivation independent of treatment efficacy.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
Very small sample size of five participants limits generalizability. No control group, so it is impossible to know if the challenge point framework caused the gains or if they would have occurred with other treatments. Treating clinicians were unblinded during practice sessions, which may have influenced their scoring and the difficulty adjustments. Participants were selected from previous studies where they had already shown some response, potentially creating a bias toward responders.
Declared interests
The authors declared no conflicts of interest.
The easy way to misread this
Do not interpret the software's ability to advance a client through difficulty levels as evidence of treatment success. Several participants achieved high accuracy in the clinic but showed no improvement or even regression in spontaneous speech probes. In-session performance does not equal functional generalization.