IQ tests: can you improve your score by practising?

Most adults never have to take an IQ test. But tests for assessing students’ cognitive abilities, such as the cognitive ability test (Cat), are used in schools around the world. These tests are very similar to IQ tests. Taking them may be a pain for kids. Possibly, it’s an even bigger pain for parents.

Just for a moment, put yourself in the shoes of a parent whose child’s overall Cat score turns out to be below average. A...