Abstract
Confidence is a construct that has not been explored previously in aphasia research. We developed the Communication Confidence Rating Scale for Aphasia (CCRSA) to assess confidence in communicating in a variety of activities and evaluated its psychometric properties using rating scale (Rasch) analysis. The CCRSA was administered to 21 individuals with aphasia before and after participation in a computer-based language therapy study. Person reliability of the 8-item CCRSA was.77. The 5-category rating scale demonstrated monotonic increases in average measures from low to high ratings. However, one item ("I follow news, sports, stories on TV/movies") misfit the construct defined by the other items (mean square infit = 1.69, item-measure correlation =.41). Deleting this item improved reliability to.79; the 7 remaining items demonstrated excellent fit to the underlying construct, although there was a modest ceiling effect in this sample. Pre-to posttreatment changes on the 7-item CCRSA measure were statistically significant using a paired samples t test. Findings support the reliability and sensitivity of the CCRSA in assessing participants' self-report of communication confidence. Further evaluation of communication confidence is required with larger and more diverse simples.
Original language | English (US) |
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Pages (from-to) | 352-360 |
Number of pages | 9 |
Journal | Topics in stroke rehabilitation |
Volume | 18 |
Issue number | 4 |
DOIs | |
State | Published - Jan 1 2011 |
Keywords
- Rasch analyses
- aphasia
- assessment
- communication confidence
- rating scale
ASJC Scopus subject areas
- Clinical Neurology
- Community and Home Care
- Rehabilitation