The purpose of this study was to determine the degree of comparability between the WISC-R and the WISC-III over a three year period. The subjects were 207 children, 124 Learning Disabled, 51 Mental Disabled, and 32 Behavior Disabled, enrolled in special education, in a large urban district (Omaha, Nebraska) and several rural districts in southwest Iowa. Results from the comparison study between...

This study was intended to, meta-analytically, review whether the subtests of the Wechsler Adult Intelligence Scale are useful in differentiating between vascular dementia and Alzheimer's disease. We expected the Alzheimer's disease group to outperform the vascular dementia group on those subtests that require executive functions, whereas inferior performance of the Alzheimer's disease patients...

The reliability and factorial validity of the Wechsler Intelligence Scale for Children–Fifth Edition: Canadian (WISC-V) was investigated. The higher-order model preferred by Wechsler (2014b) contained five group factors but lacked discriminant validity. An alternative bifactor model with four group factors and one general factor, akin to the traditional Wechsler model, exhibited the best global...

Patterns of maintenance of ability across the life span have been documented on tests of knowledge (Gc), as have patterns of steady decline on measures of reasoning (Gf/Gv), working memory (Gsm), and speed (Gs). Whether these patterns occur at the same rate for adults from different educational backgrounds has been debated. In addition, age-related research is needed to study global IQs, especi...

The General Ability Index (GAI) is a composite ability score for the Wechsler Intelligence Scale for Children—Fourth Edition (WISC–IV) that minimizes the impact of tasks involving working memory and processing speed. The goal of the current study was to compare the degree to which the Full Scale IQ (FSIQ) and the GAI predict academic achievement in math and reading among a group of 88 children ...

The Processing Speed Index (PSI) was first introduced on the Wechsler Intelligence Scale, Third Edition (WISC-III; D. Wechsler, 1991), and little is known about its clinical significance. In a referred sample (N 980), children with neurological disorders (ADHD, autism, bipolar disorder, and LD) had mean PSI and Freedom from Distractibility Index (FDI) scores that were below the group mean IQ an...

A basic neuropsychological assessment battery was given to thirty-seven chronic freebase cocaine ("crack") abusers. The following tests were used: Wechsler Memory Scale (Wechsler, 1945), Rey-Osterrieth Complex Figure (Osterrieth, 1944) (copy and immediate reproduction), Verbal Fluency (semantic and phonologic), Boston Naming Test (Goodglass, Kaplan, & Weintrab, 1983), Wisconsin Card Sorting Tes...

The main objective of this study was to compare a "traditional" test of memory, the Wechsler Memory Scale-Revised (WMS-R; Wechsler, 1987) with a behavioral evaluation test, the Rivermead Behavioural Memory Test (RBMT; Wilson, Cockburn, & Baddeley, 1985). Eighty volunteers participated in the study and were divided into four groups: 20 older adults with memory problems, 20 patients with temporal...

introduction : shared neuropathology hypothesis in schizophrenia and temporal lobe epilepsy has been introduced long term ago. similar neuropathology leads to the analogous clinical features like neuropsychological features as an example. the aim of this study was to examine this hypothesis by the means of comparing neuropsychological functions in these two patient groups. method : present stud...