title: Factorial invariance for combined Wechsler Adult Intelligence Scale-Revised and Wechsler Memory Scale-Revised scores in a sample of clients with alcohol dependency.
abstract: 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.
authors.affiliation: Department of Psychology, University of Melbourne, Parkville, Victoria, Australia. s.bowden@psych.unimelb.edu.au
authors.forename: S C
authors.initials: SC
authors.lastname: Bowde
authors.forename: A J
authors.initials: AJ
authors.lastname: Ritter
authors.forename: J R
authors.initials: JR
authors.lastname: Carstairs
authors.forename: E A
authors.initials: EA
authors.lastname: Shores
authors.forename: J
authors.initials: J
authors.lastname: Pead
authors.forename: J D
authors.initials: JD
authors.lastname: Greeley
authors.forename: G
authors.initials: G
authors.lastname: Whelan
authors.forename: C M
authors.initials: CM
authors.lastname: Long
authors.forename: C C
authors.initials: CC
authors.lastname: Clifford
mesh_terms: 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*