In simplest form, IQ is supposed to be indicative of how well you learn and use information. Having a higher than average IQ just means you will likely learn faster than other. This dosn't necessarily make you smarter than somebody with a lower IQ, as actual knowledge you have (not the pace of which you can aquire it) determines that. I will agree that IQ tests do little to show for creativity. The test makers probably don't care enough about possible art/music majors to add in questions, and the art/music majors probably aren't that interested in their IQ anyways.