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ERIC Number: EJ1047057
Record Type: Journal
Publication Date: 2014-Nov
Pages: 20
Abstractor: As Provided
ISSN: ISSN-1944-7515
Interaction of Participant Characteristics and Type of AAC with Individuals with ASD: A Meta-Analysis
Ganz, Jennifer B.; Mason, Rose A.; Goodwyn, Fara D.; Boles, Margot B.; Heath, Amy K.; Davis, John L.
American Journal on Intellectual and Developmental Disabilities, v119 n6 p516-535 Nov 2014
Individuals with autism spectrum disorders (ASD) and complex communication needs often rely on augmentative and alternative communication (AAC) as a means of functional communication. This meta-analysis investigated how individual characteristics moderate effectiveness of three types of aided AAC: the Picture Exchange Communication System (PECS), speech-generating devices (SGDs), and other picture-based AAC. Effectiveness was measured via the Improvement Rate Difference. Results indicated that AAC has small to moderate effects on speech outcomes, and that SGDs appear to be most effective when considering any outcome measure with individuals with ASD without comorbid intellectual/developmental disorders (IDD). PECS appears to be most effective when considering any outcome measure with individuals with ASD and IDD. SGDs and PECS were the most effective type of AAC for preschoolers, when aggregating across outcome measures. No difference was found between systems for elementary-aged and older individuals.
American Association on Intellectual and Developmental Disabilities. P.O. Box 1897, Lawrence, KS 66044-1897. Tel: 785-843-1235; Fax: 785-843-1274; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A