Honors Theses

Date of Award

Spring 5-13-2023

Document Type

Undergraduate Thesis


Communication Sciences and Disorders

First Advisor

Diane Lowry

Second Advisor

Sarah Platt

Third Advisor

Sarah Bilsky

Relational Format



The meta-analysis examines scholarly articles regarding research on evidence-based communication for students with Autism Spectrum Disorder. More specifically, this research involves different forms of Alternative and Augmentative Communication. This form of communication is used without a voice. A variety of interventions for Manual Signing (MS), Speech Generating Devices (SGD), and Picture Exchange Communication Systems (PECS) are reviewed within the research study. The purpose of this research is to define which evidence-based Alternative and Augmentative Communication (AAC) interventions are most effective for children with Autism. More specifically, determining which form of communication can help lead children to more expressive language and communication. Due to limited research on Manual Signing, results revealed a greater increase in communication skills for Picture Exchange Communication Systems and Speech Generating Devices. SGDs have shown to have a greater effect on assisting acquired speech and PECS show an increase in communication in addition to various characteristics a child may have that limit them from being an efficient user of PECS.

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