# Wechsler Scales for Children

WISC-V is an individually administered intelligence test for children between the ages of 6 and 16 inclusive that can be completed without reading or writing.

## Elucidate Wechsler Scales for children.

David Wechsler supported the definition of intelligence as a global entity. He developed the Wechsler Intelligence Scale for Children (WISC) which belongs to the category of tests not derived from theory. The Fifth Edition (WISC-V) is the most current version.

#### Structure

The subscales are clustered in four categories as listed below:

1. Verbal Comprehension Index (VCI):
1. Vocabulary - asked to define a provided word.
2. Similarities - asked how two words are alike/similar.
3. Comprehension - questions about social situations or common concepts.
4. Information (supplemental) - general knowledge questions.
5. Word reasoning (supplemental)- a task involving clues that lead to a specific word
2. Perceptual Reasoning Index (PRI):
1. Block Design — children put together red-and-white blocks in a pattern
2. Picture Concepts — children asked to determine which pictures go together from a series of pictures
3. Matrix Reasoning — children select picture that fits a missing picture in an array
4. Picture Completion (supplemental) - children identify missing part of an artwork/common object by pointing and/or naming.
3. Working Memory Index (WMI):
1. Digit Span - children asked to repeat orally given sequences of numbers,
2. Letter-Number Sequencing — children provide back to the examiner, in a predetermined order, a series of numbers and letters
3. Arithmetic (supplemental) - orally administered arithmetic questions.
4. Processing Speed Index (PSI):
1. Coding — children under 8 mark rows of shapes with different lines according to a code, children over 8 transcribe a digit-symbol code.
2. Symbol Search — children asked to mark whether or not target symbols appear in given row of symbols.
3. Cancellation (supplemental)- children mark specific target pictures in a random and structured arrangements of pictures

WISC-V is an individually administered intelligence test for children between the ages of 6 and 16 inclusive that can be completed without reading or writing. It takes 48–65 minutes to administer. Variation in testing procedures and goals can reduce time of assessment to 15-20 minutes for the assessment of a single primary index, or increase testing time to three or more hours for a complete assessment, including all primary, ancillary, and complementary indices.

#### Purpose and Scoring

• It generates a Full Scale IQ (formerly known as an intelligence quotient or IQ score) which represents a child's general intellectual ability.
• It also provides five primary index scores (i.e., Verbal Comprehension Index, Visual Spatial Index, Fluid Reasoning Index, Working Memory Index, and Processing Speed Index) that represent a child's abilities in more discrete cognitive domains.
• Five ancillary composite scores can be derived from various combinations of primary or primary and secondary subtests.
• Five complementary subtests yield three complementary composite scores to measure related cognitive abilities relevant to assessment and identification of specific learning disabilities, particularly dyslexia and dyscalculia.

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The WISC, is an individually administered intelligence test for children between the ages of 6 and 16. It generates a full scale IQ and scores across four dimensions – Verbal Comprehension Index, Perceptual Reasoning Index, Working Memory Index and Processing Speed Index.

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