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Measuring Language Development In Children With Down Syndrome Who Use Aac, Ji Sun Park

Speech and Hearing Sciences ETDs

Purpose: This study examined the inter-observer agreement (IOA) and within-observer agreement as well as the clinical potential of newly proposed measures that are designed to monitor language progress of children with Down syndrome who use AAC. Measures were explored based on the Graphic Symbol Utterance and Sentence Development Framework.

Method: Participants included 8 preschoolers with Down syndrome. Four graduate student observers coded 13 measures across 57 intervention sessions. Each session was coded by two observers for IOA, and all sessions were recoded for within-observer agreement. Statistical analyses were completed on utterance level and session level.

Results: Across all observers and …