Factorial invariance for combined Wechsler Adult Intelligence Scale-Revised and Wechsler Memory Scale-Revised scores in a sample of clients with alcohol dependency.
This study examined the joint factor structure of the WAIS-R and WMS-R in a sample of 289 participants (mostly males) with alcohol dependency. In a confirmatory phase we contrasted a range of factor models derived from previous analyses of the Wechsler scales. The best fitting model incorporated five factors representing Verbal Comprehension, Perceptual Organization, Attention-Concentration, Verbal Memory, and Visual Memory, with reassignment of factor loadings for two subtests. The invariance of the measurement model was then examined comparing data from a large sample of healthy participants (J. R. Carstairs & E. A. Shores, 1999). The results indicated that the number of factors was invariant across samples, and four of the factors satisfied the criterion of partial measurement invariance.
Bowde
S C
SC
Department of Psychology, University of Melbourne, Parkville, Victoria, Australia. s.bowden@psych.unimelb.edu.au
Ritter
A J
AJ
Carstairs
J R
JR
Shores
E A
EA
Pead
J
J
Greeley
J D
JD
Whelan
G
G
Long
C M
CM
Clifford
C C
CC
D000293:Adolescent; D000328:Adult; D000368:Aged; D000425:Alcohol Amnestic Disorder / Q000175:diagnosis* / Q000523:psychology / Q000534:rehabilitation; D000437:Alcoholism / Q000523:psychology* / Q000534:rehabilitation; D001288:Attention; D005260:Female; D006801:Humans; D007360:Intelligence; D008297:Male; D011939:Mental Recall; D008875:Middle Aged; D011594:Psychometrics; D015203:Reproducibility of Results; D014888:Wechsler Scales / Q000706:statistics & numerical data*