Studies Comparing Augmentative and Alternative Communication Systems (AAC) Applications for Individuals With Autism Spectrum Disorder: A Systematic Review and Meta-Analysis
Education & Training in Autism & Developmental Disabilities
Aydin, O., & Diken, I. H. (2020).
Education & Training in Autism & Developmental Disabilities, 55(2), 119-141.
This systematic review and meta-analysis investigates the effect of augmentative and alternative communication software applications on social communication skills in individuals on the autism spectrum.
Not stated
Between 1980 to November 2017
Single-subject research designs
21
Findings suggested that individuals on the autism spectrum generally preferred SGDs (35 of 44 participants) compared to PECS (7 of 44 participants) and manual sign (1 of 44 participants). Only one participant did not prefer any intervention.
Generally, speech generative devices (SGD) were associated with improvements in requests/mands and communication skills (Range of effect sizes= 0.68-1.0) in children on the autism spectrum. Use of Picture Exchange Communication System (PECS) was associated with improved requestung, vocalizing, and motor imitation (Range of effect sizes= 0.91-0.97). Manual sign was associated with lesser effects overall (range of effect sizes= 0.37- 0.91).
