Ganz, J., Rea Hong, E., Goodwyn, F., Kite, E. & Gilliland, W. (2015). Impact of PECS tablet computer app on receptive identification of pictures given a verbal stimulus.

Developmental Neurorehabilitation, 18, 82-87.
Abstract: Objective: The purpose of this brief report was to determine the effect on receptive identification of photos of a tablet computer-based augmentative and alternative communication (AAC) system with voice output.

Methods: A multiple baseline single-case experimental design across vocabulary words was implemented. One participant, a preschool-aged boy with autism and little intelligible verbal language, was included in the study.

Results: Although a functional relation between the intervention and the dependent variable was not established, the intervention did appear to result in mild improvement for two of the three vocabulary words selected.

Conclusion: The authors recommend further investigations of the collateral impacts of AAC on skills other than expressive language.

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