Informational modules (Powerpoint format) reviewed by all study clinicians prior to initiation of treatment activities. While some content is study-specific, modules 4-10 contain general information that may be of interest to clinicians and researchers planning to implement biofeedback treatment. For the three modules that provide detailed information about how to cue the /ɹ/ sound in each of the three treatment conditions investigated (motor-based treatment, cueing with ultrasound, and cueing with visual-acoustic biofeedback), the Powerpoint has been augmented into a screencast video with voiceover narration.