Visual-acoustic biofeedback is supported by a small but growing body of evidence in the form of single-case experimental studies and case studies. Below are links to manuscripts that make up part of this evidence base.
- Peterson, L., Savarese, C., Campbell, T., Ma, Z., Simpson, K.O., & McAllister, T. (2022). [Telepractice treatment of residual rhotic errors using app-based biofeedback: A pilot study][6]. *Language, Speech, and Hearing Services in Schools*, early online.
- McAllister Byun, T., Campbell, H., Liang, W., Park, T.-H., & Svirsky, M. (2017). [Enhancing intervention for residual rhotic errors via app-delivered biofeedback: A case study][1]. *Journal of Speech, Language, and Hearing Research*, 60, 1810–1817.
- McAllister Byun, T. (2017). [Efficacy of visual-acoustic biofeedback intervention for residual rhotic errors: A single-subject randomization study][2]. *Journal of Speech, Language, and Hearing Research*, 60, 1175–1193.
- McAllister Byun, T., & Campbell, H. (2016). [Differential effects of visual-acoustic biofeedback intervention for residual speech errors][3]. *Frontiers in Human Neuroscience*, 10. Available at http://dx.doi.org/10.3389/fnhum.2016.00567
- McAllister Byun, T., Swartz, M. T., Halpin, P. F., & Szeredi, D., & Maas, E. (2015). [Direction of attentional focus in biofeedback treatment for /r/ misarticulation][4]. *International Journal of Language & Communication Disorders*, 15, 384-401.
- McAllister Byun, T., & Hitchcock, E. (2012). [Investigating the use of traditional and spectral biofeedback approaches to intervention for /r/ misarticulation][5]. *American Journal of Speech-Language Pathology*, 21, 207-221.
[1]: https://osf.io/tywgq/
[2]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5755545/pdf/JSLHR-60-1175.pdf
[3]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5104733/pdf/fnhum-10-00567.pdf
[4]: https://osf.io/jm7ya/
[5]: https://osf.io/e2t85/
[6]: https://osf.io/t97nu/
