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Reliability of two visual-perceptual tests for children with cerebral palsy
Li-ting Tsai1, Keh-chung Lin, Hua-fang Liao
1Taipei Parents' Association for the Visually Impaired, National Taiwan University Hospital, Taipei.
Insights
The Motor-Free Visual Perception Test-Revised (MVPT-R) and Test of Visual-Perceptual Skills-Revised (TVPS-R) show satisfactory scale-level reliability in children with cerebral palsy. However, TVPS-R subscales have large smallest real differences, limiting clinical use.
Area of Science:
- Pediatric Neurology
- Neurorehabilitation
- Developmental Psychology
Background:
- Cerebral palsy (CP) often impacts visual-perceptual skills, necessitating reliable assessment tools.
- The Motor-Free Visual Perception Test-Revised (MVPT-R) and Test of Visual-Perceptual Skills-Revised (TVPS-R) are commonly used to evaluate these skills.
Purpose of the Study:
- To determine the reliability of the MVPT-R and TVPS-R in children diagnosed with cerebral palsy.
- To assess both scale-level and subscale-level reliability, including test-retest and interrater agreement.
Main Methods:
- Fifty-two children with cerebral palsy were assessed using the MVPT-R and TVPS-R.
- Assessments were conducted by a single rater initially, followed by random assignment to the same or a different rater after 6–14 days.
Main Results:
- Both tests demonstrated high internal consistency and satisfactory scale-level reliability (high ICCs, acceptable SRDs).
- Most TVPS-R subscales showed satisfactory interrater and test-retest reliability.
- However, all TVPS-R subscales exhibited notable smallest real differences (>29%), indicating potential variability.
Conclusions:
- The MVPT-R and TVPS-R are reliable at the scale level for assessing visual-perceptual skills in children with CP.
- The large smallest real differences for TVPS-R subscales may limit their precise clinical application for tracking subtle changes.
Objective:
We examined the reliability of the Motor-Free Visual Perception Test-Revised (MVPT-R) and the Test of Visual-Perceptual Skills-Revised (TVPS-R) in 52 children with cerebral palsy.
Method:
The MVPT-R and TVPS-R were initially assessed by a single rater and then randomly assigned to the same rater or another rater after 6 to 14 days.
Results:
For scale-level reliability of both tests, the intraclass correlation coefficients (ICCs) were high. The smallest real differences (SRDs) were largely acceptable. The OICCs of most subscale-level reliability of the TVPS-R were satisfactory. The SRD of each TVPS-R subscale score was notable (>29%). The internal consistency was high for both tests.
Conclusion:
The scale-level reliabilities of both tests were satisfactory in children with cerebral palsy. Although most subscales of the TVPS-R had acceptable test-retest or interrater agreement, all subscales of the TVPS-R had large SRDs, limiting their clinical utility.
