What is best age to take IQ testing?

The best age to take IQ testing is typically around 6 to 16 years old, as this is when cognitive abilities are more stable and test results can reliably reflect a child's intellectual potential. Testing too early, such as before age 5, may not yield accurate results due to the rapid developmental changes occurring in young children. Additionally, administering the test during the late teenage years can provide insight into cognitive abilities as they transition to adulthood. However, it's important to remember that IQ tests are just one measure of intelligence and should be interpreted in context with other evaluations.