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Continued construct validation of the St. Marys CVA Evaluation: Bilateral Awareness Scale
1University of Florida, Gainesville 32610-0169.
Summary
This study found that unilateral neglect test scores correlate with awareness ratings, but not perceptual scores, in stroke patients. This suggests neglect is distinct from perceptual deficits.
Area of Science:
- Neuroscience
- Clinical Psychology
- Rehabilitation Medicine
Background:
- Unilateral neglect is a common deficit after stroke.
- Previous research suggested specific correlations between unilateral neglect tests and awareness/perceptual measures.
Purpose of the Study:
- To test the hypothesis that Schenkenberg Line Bisection Test scores correlate with St. Marys CVA Evaluation bilateral awareness ratings, but not perceptual scores.
- To further the construct validation of the St. Marys CVA Evaluation.
Main Methods:
- 26 cerebral vascular accident (CVA) patients were assessed using the Schenkenberg Line Bisection Test and the St. Marys CVA Evaluation.
- Spearman rho coefficients were computed to analyze correlations between test scores.
Main Results:
- A statistically significant correlation was found between Schenkenberg test scores and St. Marys bilateral awareness ratings.
- No significant relationship was observed between Schenkenberg scores and St. Marys perceptual scores.
- A significant relationship emerged between St. Marys bilateral awareness ratings and perceptual scores, challenging clear distinctions.
Conclusions:
- Clinical observations may not adequately differentiate unilateral neglect from perceptual impairments.
- Unilateral neglect is likely not primarily a perceptual phenomenon.
- Findings support the construct validity of the St. Marys CVA Evaluation.