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The Quality of the Evidence Supporting the Use of High-Tech AAC with People with ASD

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The purpose of this poster is to provide the results of a review of quality of the evidence for single-case experimental designs (SCEDs) related to the use of high-tech AAC among individuals with IDD.

This review will include SCEDs, which are most frequently implemented to study impacts of interventions on individuals with low incidence disabilities, based on recently released standards from professional organizations, governmental agencies (U.S.), and experts in SCED. We will report each experiment’s responsiveness to basic and additional high-quality design and the quality of the evidence via visual analysis of the graphed data.

Preliminary results indicate that there are at least 33 single-case experimental articles on the use of high-tech AAC interventions that meet the minimum design quality standards. At least 7 of these articles included the use of current mobile app technology. It appears that high-tech AAC will meet the standards as an evidence-based practice.

We anticipate that high-tech AAC will meet the standards for at least moderate evidence, resulting in an overall determination that high-tech AAC is an evidence-based practice for this population. If possible, we will break down the evidence by communication apps versus traditional aided AAC and by participant characteristics. This would provide more fine-grained recommendations for practitioners and caregivers.

Declaration of Interest
The authors disclose they have no financial or other interest in objects or entities mentioned in this paper.


Jennifer Ganz    
Texas A & M University
United States

Kristi Morin    
Texas A & M University
United States

Stephanie Gerow    
Texas A & M University
United States

Emily Gregoroi    
Texas A & M University
United States

Derya Genc Tosun    
Anadolu University


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