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The current version of the test, the WAIS-IV, which was released in 2008, is composed of 10 core subtests and five supplemental subtests, with the 10 core subtests yielding scaled scores that sum to derive the Full Scale IQ. With the WAIS-IV, the verbal/performance IQ scores from previous versions were removed and replaced by the index scores.
Download as PDF; Printable version; In other projects ... It consists of twelve subtests [2] which give five scores, one for each of the five domains tested ...
Evaluation of WTAR scores across the degree of sustained TBI (mild, moderate, severe) suggests that the assessment may underestimate premorbid IQ in patients with more severe damage. [6] In patients with Alzheimer's disease, WTAR scores declined as the degree of cognitive impairment increased in more affected individuals.
Figure from The Block-Design tests by Kohs (1920) showing, in grayscale, an example of his block test. [1]David Wechsler adapted a block design subtest for his Wechsler-Bellevue test, the predecessor of his WAIS (Wechsler Adult Intelligence Scale), from the Kohs block design test developed in 1920 at Stanford University by Samuel Calmin Kohs.
In addition to VIQ, PIQ, and FSIQ scores, four new index scores were introduced: the Verbal Comprehension Index (VCI), the Perceptual Organization Index (POI), the Freedom from Distractibility Index (FDI), and the Processing Speed Index (PSI). The WISC-IV was produced in 2003. The WISC-V was published in 2014. The WISC-V has a total of 21 subtests.
Based on The Boston Process Approach to assessment, in order to examine the role of memory in Digit-Symbol-Coding performance, WAIS-III (but not WAIS-IV [5]) contains an optional implicit learning test: after the Digit Symbol-Coding test paired and free recall of the symbols is assessed. [6] [7] [8] [9]
The highest score obtainable by direct look-up from the standard scoring tables (based on norms from the 1930s) was IQ 171 at various chronological ages from three years six months (with a test raw score "mental age" of six years and two months) up to age six years and three months (with a test raw score "mental age" of ten years and three ...
The test takes 45–90 minutes to administer depending on the age of the participant. The mean score for the WIAT-II is 100 with a standard deviation of 15, and the scores on the test may range from 40 to 160. 68% of participants in the UK standardisation sample obtained scores of 85-115 and 95% obtained scores of 70-130.