IGNOU Corner >> Solved Assignments >> MPCE012 >> Q5

Q5. 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.


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. 

* * *

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.


If you found this useful, do remember to like Psychology Learners on Facebook and subscribe by email.

In a hurry? Download the full solved IGNOU assignments from the links below>>

MPC001: Cognitive Psychology
MPC002: LifeSpan Psychology
MPC003: Personality: Theories and Assessment
MPC004: Advanced Social Psychology
MPC005: Research Methods in Psychology
MPC006: Statistics in Psychology
MPCE011: Psychopathology (not uploaded yet)
MPCE012: Psychodiagnostics (not uploaded yet)
MPCE013: Psychotherapeutic Methods (not uploaded yet)
MPCE021: Counselling Psychology (not uploaded yet)
MPCE022: Assessment in Counselling and Guidance (not uploaded yet)
MPCE023: Interventions in Counselling (not uploaded yet)
MPCE031: Organisational Behaviour (not uploaded yet)
MPCE032: Human Resource Development (not uploaded yet)
MPCE033: Organisational Development (not uploaded yet)

For 'SuperNotes' click here.

For Free eBook previews click here.

For other IGNOU MAPC material click here.

For IGNOU related information and material click here.