The Wechsler Scale Intelligence for Children (WISC-V), developed by David Wechsler, is a separate intelligence test for children aged 6 to 16. The fifth edition (WISC-V, Wechsler, 2014) is the latest version.
The WISC-V takes 45-65 minutes. It creates a full-scale IQ (formerly known as Intelligence Quotient or IQ) that represents the child's general mental capacity. It also provides five main index scores: Verbal Intelligence Index, Visual Perceptual Concept Index, Reflection Index, Empty Memory Index, and Processing Speed Index. These indicators represent the capabilities of a child in distinct cognitive domains. Five auxiliary composite scores can be derived from various combinations of primary or primary and secondary sub-tests.
Five complementary subunits provide three complementary composite scores to measure relevant cognitive abilities related to assessment and detection of specific learning difficulties, particularly dyslexia and dyscalculia. Changing test procedures and objectives may reduce the assessment time to 15-20 minutes to assess a primary marker or increase test time to three or more hours for a full evaluation, including all primary, ancillary and complementary markers .