Welcome to our feature on Children’s Intelligence tests
Our Introduction to Children’s Intelligence tests
Children’s intelligence tests are of great interest to many people. Comparing scores and finding which ‘category’ you fall into is however not the main function of these. The use of these tests in educational psychology has much further reach than just that.
EXAMPLE 1 – CAT4
You also like to try our CAT4 test practice ; parents guide to the CAT4; and the type of questions in the CAT4 test.
Plus, find out what your CAT4 results mean for your child.
Children’s Intelligence Test EXAMPLE 2 – Weschler Intelligence Test
Let’s take as a different example, the Weschler Intelligence test. Otherwise known as the WISC-V. This was only published in 2014. There are the five primary index WISC-V scores:
- Verbal Comprehension Index (VCI)
- Visual-Spatial Index (VSI)
- Fluid Reasoning Index (FRI)
- Working Memory Index (WMI) and
- Processing Speed Index (PSI)

The phrase IQ was however coined by the German psychologist, William Stern. Originally an IQ score was attained by dividing mental age (from IQ test) by chronological age. The resulting fraction was then multiplied by 100 to attain an IQ score.
Although the English statistician, Francis Galton made the first attempt at standardized testing, Alfred Binet and Theodore Simon had more success in 1905. The Binet-Simon intelligence scale focused on verbal abilities. It was however intended to identify mental retardation in school children.

Weschler Intelligence Scale for Children
Weschler’s Verbal Comprehension Index
The VCI has the following subtests and measures verbal reasoning.
- Vocabulary: the meanings of certain words.
- Information: general knowledge questions.
- Comprehension: explain social concepts.

Weschler Intelligence Test’s Visual-Spatial Index
The VSI has the following subtests and measures visual-spatial reasoning
- Block Design: children have to pack out patterns with white and red blocks according to models presented to them in a book.
- Visual Puzzles: children view a puzzle in a book and then have to choose a piece to complete it.
WISC-V score – Fluid Reasoning Index
The FRI has the following subtests and measures inductive and quantitative reasoning.
- Matrix Reasoning: choose the right option to complete a picture.
- Figure Weights: children view pictures shapes on a scale (or scales) with one empty side they have to choose the option that keeps the scale balanced.
- Picture Concepts: children have to choose pictures that go together to complete the series.
- Arithmetic: maths word problems in a limited time.
Weschler Intelligence Test’s Working Memory Index
The WMI has the following subtests and measure working memory ability.
- Digit Span: the administrator presents a sequence of numbers orally, the child then has to repeat the either in reverse or ascending order.
- Picture Span: children view pictures and choose from options in order if possible.
- Letter-Number Sequencing: a series of numbers and letters need to be repeated.

Children’s Intelligence tests
WISC-V score – Processing Speed Index
The PSI has the following subtests and is a measure of processing speed.
- Coding: this is a timed test where children (depending on age) subsequently have to mark shapes according to code or use a digit-symbol code to fill in spaces.
- Symbol Search: presented with symbols and target symbols and subsequently mark rows to show whether those are present.
- Cancellation: scanning pictures to mark certain ones within a time limit.
Supplementary WISC-V index scores
There are also supplementary index scores in the WISC-V, namely:
- Quantitative Reasoning Index (QRI)
- Auditory Working Memory Index (AWMI)
- Nonverbal Index (NVI)
- General Ability Index (GAI)
- Cognitive Proficiency Index (CPI).
However, only three of these ancillary index scores (NVI, GAI, and CPI) can be calculated from the 10 primary subtests.
History of Children’s Intelligence Tests
IQ (Intelligence Quoficient) or intelligence tests are meant to measure human intelligence. This obviously requires a clear definition of intelligence. Finding a definition for intelligence has however been the tricky part and seems to differ slightly for many. However this score is not the main aim of these assessments. Rather, they have been used for determining strengths and weaknesses and finding areas where support is needed. These tests are now just a quick quiz on the internet providing you with a ‘grading. Instead, these assessment are reliant on the observations of a professional that administer these in a standardised manner.
Interpreting IQ scores
Whilst giving an accurate assessment of a person’s strengths and weaknesses, IQ scores should be interpreted with caution. Test scores should not be seen as fixed, unchanging indicators of ability as there are a number of factors which can influence performance on the day of the assessment. These factors tend to raise or lower the overall profile but do not alter its ‘shape’.
It should be noted that all psychometric tests are prone to error and IQ scores change as a child develops and matures.
Table 5.1[1]
Composite Score Range | Descriptive Classification | Theoretical Normal Curve | Actual Sample | 130 and above | Very superior | 2.5 | 2.3 | 120 to 129 | Superior | 7.2 | 6.8 | 110 to 119 | High-Average | 16.6 | 17.1 | 90 to 109 | Average | 49.5 | 50.2 | 80 to 89 | Low-Average | 15.6 | 15.0 | 70 to 79 | Borderline case | 6.5 | 6.1 | 69 and below | Extremely Low | 2.1 | 2.5 |
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[1] WAIS-IV UK Version Manual, pg.126
IQ test scores are an indicator of how a person is performing at present. Therefore intelligence tests are used to identify areas of relative strength and weakness. The observations of the administrator are crucial in interpreting these results.
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Children’s Intelligence tests – – – – Intelligence tests are a part of children’s aptitude tests – – – – – children’s psychometric tests