IQ tests are designed to measure certain cognitive abilities, and they are found to be useful in predicting academic success and in diagnosing intellectual disabilities. However, it's important to note that IQ tests are not perfect measures of intelligence and should not be used to make definitive judgments about a person's intelligence or potential.
The results of IQ tests can vary depending on the specific test used, the person's age, cultural background, and educational level. Additionally, there is a lot of individual variation in intelligence, so two people with the same IQ score may not have the same cognitive abilities.
Overall, IQ tests provide a useful measure of certain aspects of intelligence but should not be viewed as definitive measures of a person's intellect.