IQ Test for 8 Year Olds

Everyone gets the same 25 visual puzzles and the same 12-minute timer, and the score is not adjusted for age. The puzzles need no reading, but they are set at teen and adult level. Most 8 year olds will get through the early puzzles in each set and then hit ones that need several rules held in mind at once.

That is why the number itself is not useful. A low result at 8 says nothing about how your child compares with other 8 year olds, because the test never compares them with other 8 year olds.

• Sit with your child and treat it as a puzzle session, not a test.
• Do the first puzzle of a set together and talk through the rule out loud. That is worth more than a score.
• Stop if it stops being fun. There is no reason to finish all 25.

Jean Piaget described roughly ages 7 to 11 as the concrete operational stage: children reason logically about things they can see and handle, and find abstract, multi-step rules harder. That fits what teachers see. An 8 year old can follow a pattern of one changing shape, and struggles when size, colour and position all change together.

Matrix puzzles of the kind we use are also used with children, but the children's versions, such as Raven's Coloured Progressive Matrices (designed for ages 5 to 11), are shorter and much simpler. Our puzzles are not a children's version.

On an age-normed test, 100 is the average at 8, as at every age, and about two in three 8 year olds score between 85 and 115. The table shows what share of 8 year olds each score beats on a properly normed test. Our test does not give you this comparison.

Older books described a bright child by a mental age above their real age. At 8, an IQ of 120 under that old ratio formula gives a mental age of 9 years 7 months. Modern tests no longer report it. The mental age calculator shows how the formula works and why it was dropped.

Scores at this age are also less settled than in adults, and a child's result can move between testings. One number at 8 is a snapshot.

The WISC-V, used from age 6, is given one to one by a psychologist over an hour or more. It compares your child with a large sample of children of the same age, which is what makes the score meaningful.

If you have a real concern, start with the class teacher. In England the school's special educational needs coordinator (SENCo) can advise, and in the US you can ask the school about an evaluation. Schools in both countries also use group reasoning tests such as CAT4 and CogAT. These are screening tools, not diagnoses.