Use of Augmentative and Alternative Communication by Individuals with Rett Syndrome Part 2: High-Tech and Low-Tech Modalities

Use of Augmentative and Alternative Communication by Individuals with Rett Syndrome Part 1: Page-Linking

Although the last decade has welcomed evidence that individuals with Rett syndrome (RTT) can communicate using alternative and augmentative communication (AAC), less is known about effective procedures for teaching various component skills required for expressive communication of individuals with complex communication needs. The purpose of the current study was to evaluate the effects of systematic individualized instruction procedures on the page-linking skills of individuals with RTT. A nonconcurrent multiple baseline design across participants was used to evaluate independent and accurate responding utilizing both a high-tech and low-tech AAC device for three participants. All sessions were conducted in the participants' homes by their parents with remote coaching from a researcher via telehealth. Results indicated that for all three participants, individualized procedures that included behavior chaining, differential reinforcement, and delayed prompting were effective for teaching page-linking in both a high-tech and a low-tech AAC device. Directions for future research and practice are discussed.

The Effect of Caregiver-Implemented Training on Augmentative Alternative Communication Use by Individuals with Rett Syndrome: Remote Coaching via Telehealth

Limited published literature exists demonstrating functional relations between idiosyncratic responses or augmentative alternative communication (AAC) and social reinforcement for individuals with Rett syndrome. In this study, six females with Rett syndrome ages 2-25 demonstrated requesting for preferred items using both idiosyncratic responses (e.g, looking, reaching) and AAC (e.g. single response microswitches). Researchers connected remotely via telehealth to coach caregivers to implement all sessions in home environments. Researchers individualized response prompt delays during AAC sessions (request/mand training) based on each participants' latency to respond during baseline. Implications for practice and directions for future research are discussed.