Predictive validity of WAIS-R VIQ-PIQ splits in persons with major depression.
We selected a sample of patients with depression (N = 70) and used Bayesian analyses to examine the diagnostic predictive validity of the Wechsler Adult Intelligence Scale-Revised Verbal IQ (VIQ) minus Performance IQ (PIQ) difference score for depression. The patients showed average VIQ-PIQ differences in the expected direction (i.e., VIQ > PIQ). However, based on sensitivity, specificity, and positive predictive value statistics, we concluded that the VIQ-PIQ split has very low predictive validity in persons with depression.
Iverson
G L
GL
Department of Psychiatry, University of British Columbia and Riverview Hospital, Vancouver, Canada.
Turner
R A
RA
Green
P
P
D000328:Adult; D001499:Bayes Theorem; D003866:Depressive Disorder / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D011594:Psychometrics; D012680:Sensitivity and Specificity; D014888:Wechsler Scales / Q000706:statistics & numerical data*