Validity of the CogState brief battery: relationship to standardized tests and sensitivity to cognitive impairment in mild traumatic brain injury, schizophrenia, and AIDS dementia complex.
This study examined the validity of the four standard psychological paradigms that have been operationally defined within the CogState brief computerized cognitive assessment battery. Construct validity was determined in a large group of healthy adults. CogState measures of processing speed, attention, working memory, and learning showed strong correlations with conventional neuropsychological measures of these same constructs (r's = .49 to .83). Criterion validity was determined by examining patterns of performance on the CogState tasks in groups of individuals with mild head injury, schizophrenia, and AIDS dementia complex. Each of these groups was impaired on the CogState performance measures (Cohen's d's = -.60 to -1.80) and the magnitude and nature of this impairment was qualitatively and quantitatively similar in each group. Taken together, the results suggest that the cognitive paradigms operationally defined in the CogState brief battery have acceptable construct and criterion validity in a neuropsychological context.
Maruff
Paul
P
CogState Ltd., 7/21 Victoria Street, Melbourne 3000, Australia. pmaruff@cogstate.com
Thomas
Elizabeth
E
Cysique
Lucette
L
Brew
Bruce
B
Collie
Alex
A
Snyder
Peter
P
Pietrzak
Robert H
RH
D015526:AIDS Dementia Complex / Q000175:diagnosis*; D000328:Adult; D001930:Brain Injuries / Q000175:diagnosis*; D003072:Cognition Disorders / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000175:diagnosis*