Electronic Theses and Dissertations

Date of Award

1-1-2024

Document Type

Thesis

Degree Name

M.S. in Communication Sciences and Disorders

First Advisor

Hyejin Park

Second Advisor

Gregory J. Snyder

Third Advisor

Myriam Kornisch

Relational Format

dissertation/thesis

Abstract

Purpose

Individuals with aphasia often experience communication breakdowns. One strategy that has been shown to be useful is switching communication modalities when a breakdown occurs. While many researchers have incorporated and shown positive effects of multimodality in aphasia treatment, few studies have utilized a discourse task to generalize the methods trained during the structured tasks to everyday life. The purpose of Multimodal Communication Treatment + Discourse and Group (MCT+DG) is to train various communication modalities in both structured and unstructured settings, which include a discourse and group therapy to help generalizing the skills in daily communication.

Method

Two participants with aphasia participated in thirty total treatment sessions which included two individual sessions and one group session per week. During each session, the participants would practice five communication modalities (writing, drawing, gesturing, verbalizing, and using a communication book) in a structured task (referential communication) and a training (modality production task). Each participant also participated in an unstructured discourse task in which they generated a story of a picture scene. We obtained data from pretreatment, post-treatment, and follow-up sessions to measure the percentage of initial response and repair response accuracy to calculate the total effect size of the treatment.

Results

Neither of the participants showed a significant increase in percentages of initial or repair response accuracy at the word or discourse levels. However, a visual inspection of each participant’s graphs of initial and repair response accuracy suggested positive evidence of treatment effects.

Conclusion

While the experiment is lacking statistical support, it provided some evidence and potential of patient’s increased ability to utilize multiple communication modalities to help solve their communication breakdowns. We suggested several issues that affected the treatment effects such as ceiling effects, intervention intensity, and internal emotions of the participants. Future research may consider addressing the issues to maximize treatment effects. Also, a larger sample size and using other therapy flatforms (e.g., Telepractice) can be considered for future directions.

Available for download on Wednesday, October 07, 2026

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