As you alluded to in your comment, there are different types of intelligence. Also, the concept of intelligence itself is too broad to define precisely. That s

As you alluded to in your comment, there are different types of intelligence. Also, the concept of intelligence itself is too broad to define precisely. That said, IQ tests are not as flawed as people think -- they measure a particular set of abilities, and there is evidence that those abilities correlate to aptitudes that are useful in some areas of life. For instance, the Advanced Raven Matrices test (a "culture-free" test used by Mensa and other organizations) measures visual-spatial skills and does it fairly well at that (as long as it is not gamed -- it is possible to study for an IQ test and do well in it -- but then again any test can be gamed). If a particular task/job requires heavy visual-spatial skills, chances are that people who score well on visual-spatial tests will tend to do well there. Visual-spatial skills are a type of intelligence. It's not the only type, but it is one type. You need to understand what the test is measuring.