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  • Title: Effects of an Augmentative and Alternative Communication Technology Decoding Feature on Single-Word Reading by Individuals With Down Syndrome and Limited Functional Speech.
    Author: Holyfield C, Pope L, Light J, Jakobs E, Laubscher E, McNaughton D, Pfaff O.
    Journal: Am J Speech Lang Pathol; 2023 May 04; 32(3):1195-1211. PubMed ID: 36940479.
    Abstract:
    PURPOSE: Literacy skills are foundational to participation in adolescent and adult life, and decoding skills (i.e., sounding out to read words) are critical to literacy learning. Literacy also increases communication options for individuals with developmental disabilities who use augmentative and alternative communication (AAC). Yet, current AAC technologies are limited in their support of literacy development (especially decoding skills) for the individuals with developmental disabilities who require them. The purpose of this study was to conduct a preliminary evaluation of a new AAC feature designed to support decoding skills. METHOD: Three individuals who had limited functional speech and limited literacy skills, specifically two adolescents and one young adult with Down syndrome, participated in the study. The study used a single-subject, multiple-probe, across-participants design. RESULTS: All three participants demonstrated increases in reading performance, including decoding of novel words. High variability in performance was observed, however, and no participant reached reading mastery. Still, analysis reveals that for all participants, interacting using the new app feature increased reading. CONCLUSIONS: These results offer preliminary evidence that an AAC technology feature that provides models of decoding (upon selection of AAC picture symbols) can support individuals with Down syndrome in building decoding skills. While not intended to replace instruction, this initial study offers initial evidence in its efficacy as a supplemental avenue for supporting literacy in individuals with developmental disabilities who use AAC.
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