Related Experiment Video
Updated: Aug 6, 2026

Computerized Adaptive Testing System of Functional Assessment of Stroke
Published on: January 7, 2019
Clinical utility of the Category Test as a multidimensional instrument
1Psychology Service, Mary Free Bed Hospital, 235 Wealthy Street Southeast, Grand Rapids, Michigan 49503, USA. idonders@mfbrc.com
Abstract:
The construct and criterion validities of the Category Test (CT) were evaluated in 162 participants who had sustained traumatic brain injury and had been screened carefully for confounding factors. Maximum likelihood factor analysis identified 2 latent constructs, consistent with previous research. However, only subtests associated with the Proportional Reasoning factor (Subtests V and VI) demonstrated consistent criterion validity in terms of sensitivity to injury severity. Performance of Subtest III, associated with the Spatial Positioning factor, was in the range of chance for more than a third of the sample, without any relationship to injury variables. It was concluded that the CT has construct validity as a multidimensional instrument but that only the Proportional Reasoning factor has criterion validity in the evaluation of sequelae of traumatic brain injury.
Related Concept Videos
Reliability and Validity
Multiple Comparison Tests
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
Statistical Methods to Analyze Parametric Data: Student t-Test and Goodness-of-Fit Test
The Student's t-test is a statistical test that examines if there is a statistically significant difference between the means of two groups. This test is instrumental when dealing with data...
Sensitivity, Specificity, and Predicted Value
Sensitivity is the...
Self-Report Tests of Personality
Cochran's Q Test

