Participant characteristics predicting communication outcomes in AAC implementation for individuals with ASD and IDD: a systematic review and meta-analysis

J. B. Ganz, James E. Pustejovsky, Joe Reichle, Kimberly J. Vannest, Margaret Foster, Lauren M. Pierson, Sanikan Wattanawongwan*, Armando J. Bernal, Man Chen, April N. Haas, Ching Yi Liao, Mary Rose Sallese, Rachel Skov, S. D. Smith

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

This meta-analysis examined communication outcomes in single-case design studies of augmentative and alternative communication (AAC) interventions and their relationship to participant characteristics. Variables addressed included chronological age, pre-intervention communication mode, productive repertoire, and pre-intervention imitation skills. Investigators identified 114 single-case design studies that implemented AAC interventions with school-aged individuals with autism spectrum disorder and/or intellectual disability. Two complementary effect size indices, Tau(AB) and the log response ratio, were applied to synthesize findings. Both indices showed positive effects on average, but also exhibited a high degree of heterogeneity. Moderator analyses detected few differences in effectiveness when comparing across diagnoses, age, the number and type of communication modes, participant’s productive repertoires, and imitation skills to intervention. A PRISMA-compliant abstract is available: https://bit.ly/30BzbLv.

Original languageEnglish
Pages (from-to)7-22
Number of pages16
JournalAAC: Augmentative and Alternative Communication
Volume39
Issue number1
DOIs
Publication statusPublished - 2023

Keywords

  • AAC
  • Augmentative and alternative communication
  • autism spectrum disorder
  • communication intervention
  • intellectual disability
  • meta-analysis
  • systematic review

ASJC Scopus subject areas

  • Rehabilitation
  • Speech and Hearing

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