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The Relationship Between Narrative Informativeness And Psychosocial Outcomes In Chronic Stroke-Induced Aphasia, Eileen Armes, Jessica Richardson, Rick Arenas, Lori Nelson

Speech and Hearing Sciences ETDs

Currently there is a gap in the literature in understanding the relationship between the newly categorized primary outcome measure of discourse and secondary outcomes related to psychosocial impact, such as participation, psychological impact, social well-being, or mood. In a large sample of persons with stroke-induced aphasia (N=115), this study analyzed discourse samples using main concept analysis to determine how discourse performance correlates with the secondary outcome measures ALA, CCRSA, GDS, and CIQ. As a secondary research question, the differences in these relationships dependent on severity was also explored. Results showed statistically significant positive correlations between main concepts (MCs) and ALA …

Estimating The Impact Of Assessment And Treatment Fidelity On Aphasia Treatment Outcomes, Trisha L. Tanaka

Speech and Hearing Sciences ETDs

Purpose: Calls for treatment and assessment fidelity strongly suggest the need to reduce treatment provider and assessor variance surrounding intervention research. The extent to which these sources of variance influence treatment outcomes in aphasia treatment research has yet to be examined. This simulation study sought to explore the relationships between quality of fidelity methods, sample size, power to detect treatment effects, and aphasia treatment effect sizes.

Methods: Individual participant outcomes collected from previous aphasia treatment research studies were used to simulate 200,000 participant outcomes, from which 8,000 sample treatment trials were simulated. Effect sizes were calculated for treatment outcomes related …