The Woodcock-Johnson IV Tests of Cognitive Abilities (WJ IV COG) is a comprehensive assessment battery designed to assess broad and narrow cognitive abilities, as defined by the Cattell-Horn-Carroll (CHC) theory of intelligence. Previous studies examined the invariance of the WJ assessments across sex and age groups using factor analytic methods.…

Reports the validities and reliabilities of two short forms of the Wechsler Adult Intelligence Scale (Revised) (Vocabulary and Block Design, and Arithmetic and Picture Arrangement) for each of nine age groups, together with standard errors of estimate and measurement. Results support the use of these forms for their intended purpose. (BH)

Six hierarchical clustering methods were applied to subtest intercorrelations for each of the nine age groups in the Wechsler Adult Intelligence Scale-Revised (WAIS-R) standardization sample. Results point to the possibility of three simultaneously plausible solutions as they support each of the traditional factor structures in varying degrees.…

Full scale IQ (FSIQ) scores, followed by verbal (VIQ) and performance (PIQ) IQ scores, demonstrated the highest comparability between WAIS-R and its seven subtest form when tested with 1,880 subjects from the standardization sample. Correlations between versions were consistently lower for PIQ than FSIQ and VIQ. Age grouping did not affect…

Evaluated the ability of the Wonderlic Personnel Test to replicate the Wechsler Adult Intelligence Scale (WAIS) with (N=120) normal persons divided into principal and cross-validation groups. Correlations between the Wonderlic IQs and the WAIS Full Scale IQs were .93 for the main group and .91 for the cross-validation group. (Author)

Obtained a hierarchical factor solution on the Wechsler Adult Intelligence Scale-Revised (WAIS-R) subtest intercorrelations for the nine age groups included in the standardization sample. Findings support the validity of the WAIS-R as a measure of general intelligence and the validity of maintaining separate Verbal and Performance IQs. (Author)

Aims of this study were to determine whether the factor structure produced in earlier research by Kear-Colwell (1973, 1977) on the Wechsler Memory Scale could be replicated in a non-patient population (most research uses patient populations) and also to examine the effects of age, sex, and social class on the performance of normal adults on this…