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Enhanced user friendliness and reduced administration time (by 15%).Improved floors/ceilings, improved subtest/composite reliability, and expanded FSIQ range.
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Additional tasks for improved clinical utility, new clinical and validity studies.New subtests, including Visual Puzzles, Figure Weights, and Cancellation.Increased developmental appropriateness.Ī core battery of 10 unique subtests focuses on four specific domains of intelligence: verbal comprehension, perceptual reasoning, working memory, and processing speed.Reflects changing demographics, emerging clinical needs, new research, and increased caseloads.Special attention was paid to the assessment of older adults, enhancing the clinical utility for the aging population. Norms to Age 90 The WAIS–IV-CDN, includes normative data for ages 16 to 90, based on a fully stratified representative Canadian sample. WAIS-IV was developed to provide the most advanced measure of cognitive ability and results when addressing the changing clinical landscape. The WAIS®-IV-CDN with Canadian norms is the gold–standard assessment instrument to measure cognitive ability in adults.