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Efficacy of Visual-Acoustic Biofeedback Intervention for Residual Rhotic Errors: A Single-Subject Randomization Study
1Department of Communicative Sciences and Disorders, New York University.
Summary
Visual-acoustic biofeedback shows promise for treating residual rhotic errors in children and adolescents. This intervention may offer greater gains than traditional methods for some individuals.
Area of Science:
- Speech-language pathology
- Audiology
- Pediatric therapy
Background:
- Residual rhotic errors often persist after initial speech therapy.
- Effective interventions for these persistent errors are needed.
- Visual-acoustic biofeedback offers a novel approach to speech sound correction.
Purpose of the Study:
- To evaluate the efficacy of visual-acoustic biofeedback for residual rhotic errors.
- To compare biofeedback intervention with traditional articulatory treatment.
- To assess treatment effectiveness in a pediatric population.
Main Methods:
- A single-subject experimental design with alternating treatments was employed.
- Seven child and adolescent participants received 20 sessions over 10 weeks.
- Blinded, randomized assessment of perceptual accuracy was conducted.
Main Results:
- Four out of seven participants showed a clinically meaningful response.
- Three participants exhibited statistically significant differences between treatments.
- Biofeedback intervention yielded greater within-session gains for these three participants.
Conclusions:
- Visual-acoustic biofeedback may enhance intervention for residual rhotic errors.
- Individual responses to biofeedback vary, suggesting further research is needed.
- Identifying optimal candidates for biofeedback is a key area for future study.