BiOfeedback, Online for Sibilant Treatment

Participants will view a real-time FFT spectrum and will be cued to match a visual target for /s/ where the spectral energy is concentrated to the right side of the display, primarily in the 5000-10,000 Hz region of the spectrum. Practice will occur in blocks of 10 consecutive trials on the same item (e.g., 10 /sa/), after which a new item will be addressed (e.g., 10 /se/). Within each block, the clinician will provide qualitative (knowledge of performance) feedback as prompted by the research team's custom open-source software, Challenge Point Program (CPP). The CPP software prompts clinician actions such as delivery of knowledge of performance (KP) feedback. Following each block of ten trials, the software automatically tallies the scores entered by the clinician and uses the summed scores to make adaptive changes in practice difficulty.