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Do all intelligence tests measure the same thing?

Intelligence is made up of many different abilities, and no one test captures them all. Thus, there is no such thing as one single IQ test; rather, depending on the theory and the choice of tasks, there are different tests that cover more or less different aspects of intelligence. If a child has different scores on two different tests, it may be because the tests are actually measuring different things. Some tests, for instance, cover areas that are highly dependent on education, such as vocabulary or general knowledge. By using language-free material, other tests strive to be more neutral in terms of education. In other words, IQ is not the same as IQ! Therefore, whenever an intelligence test is administered, it is important to understand exactly what skills and abilities are being assessed.