Teaching Preschoolers With Down Syndrome Using Augmentative and Alternative Communication Modeling During Small Group Dialogic Reading.

Abstract

Purpose This study evaluated the effect of aided augmentative and alternative communication modeling (AAC-MOD) on the communication skills of children with Down syndrome (DS) during small group dialogic reading. Method Four children with DS between 3;1 and 5;3 (years;months; M = 4;5) and 5 typically developing peers between 3;5 and 5;9 (M = 4;3) participated. Effects were examined using a multiple probe across behaviors design with 4 children with DS. To simulate typical dialogic reading routines in inclusive classrooms, a strategy called Read, Ask, Answer, Prompt (Binger, Kent-Walsh, Ewing, & Taylor, 2010) was applied during the baseline and intervention sessions. Results A functional relation was demonstrated between (a) AAC-MOD and percentage of correctly identified symbols for 3 participants, (b) AAC-MOD and rate of symbolic communication for 2 participants, and (c) AAC-MOD and number of different words for 2 participants. Increases in number of multiple word combinations occurred for 2 participants. All 4 children maintained their percentage of correctly identified symbols. Increases in rate of symbolic communication did not generalize to thematic play contexts, a distal measure of response generalization. Conclusion AAC-MOD is an effective strategy for teaching target vocabulary and increasing rate of symbolic communication in young children with DS. Supplemental Material https://doi.org/10.23641/asha.10093538.