Factors associated with word memory test performance in persons with medically documented traumatic brain injury

Model System:

TBI

Reference Type:

Journal

Accession No.:

J75805

Journal:

The Clinical Neuropsychologist

Year, Volume, Issue, Page(s):

2015 , 29, 4, 522-541

Publication Website:

Abstract:

Study examined the rate of poor performance validity and identified factors associated with Word Memory Test (WMT) performance in a large, multicenter cohort of community dwelling adults with medically documented traumatic brain injury (TBI). A total of 491 subjects with TBI were administered a battery of cognitive tests and questionnaires on emotional distress and post-concussive symptoms. Performance validity was measured with the WMT. Additional data were collected by interview and review of medical records. One hundred seventeen participants showed poor performance validity using the standard cutoff. Variable cluster analysis was conducted as a data reduction strategy. Findings revealed that the 10 cognitive tests and questionnaires could be summarized as 4 indices: emotional distress, speed of cognitive processing, verbal memory, and verbal fluency. Regression models revealed that verbal memory, emotional distress, age, and injury severity (time to follow commands) made unique contribution to prediction of poor performance validity. This study found poor performance validity was common in a research sample of persons with medically documented TBI who were not evaluated in conjunction with litigation, compensation claims, or current report of symptoms. Poor performance validity was associated with poor performance on cognitive tests, greater emotional distress, lower injury severity, and greater age.

Author(s):

Sherer, Mark, Davis, Lynne C., Sander, Angelle M., Nick, Todd G., Luo, Chunqiao, Pastorek, Nicholas, Hanks, Robin