Concurrent Validity of New Subscale Scores for the Booklet Category Test

Abstract

The Booklet Category Test (BCT) is a neuropsychological test of cognitive dysfunction that provides only one overall error score indicative of global impairment. It does not, however, delineate specific domains that might be impaired. The aim of this study is to concurrently validate 13 new BCT subscales using legacy instruments in patients with nonpenetrating traumatic brain injury (TBI). Eighty-nine patients with mild, moderate, and severe TBI completed a battery of neuropsychology tests. Partial correlations controlling for age were performed and there were significant correlations between the a priori selected scores from legacy measures of major cognitive domains and both BCT total errors and subscale scores. Additional analysis showed that several subscales were able to differentiate between performance levels on the legacy measures. Overall, our results showed that the subscales measured cognitive skills beyond global impairment, supporting the use of the BCT subscales in a population with TBI.

Identifying evoked potential response patterns using independent component analysis and unsupervised learning

“…The HCT is a neuropsychological test that traditionally provides only an overall error score indicative of global impairment [51]. However, recent works have attempted to develop and validate several scoring subscales that allow measuring cognitive skills in more detail and provide more information about the individuals performance, which increases the clinical utility of the test [52,53]. Some of these subscales (ex., the CAT-2 and CAT-2A subscales) highlight the importance of examining how performance changes across a sequence of trials, instead of an overall score or a single trial, in order to evaluate the process of learning and applying the underlying abstract principle [52].…”