I agree with he esteem comment, but I'm not entirely sure about the accuracy - or at least what exactly they measure. I think its really hard to develop an IQ test that is not also (or primarily) an aptitude test - like the SAT. At that point it doesn't measure what you ‘can’ know, but what you do know. At any rate, I've done well on standardized tests, and it's helped me in life, but I have lacked the ability to protect myself from malicious and aggressive people - which is also an aptitude/talent. We all have something unique to bring to the dance.
In the old days (and maybe still) the Army gave an IQ test to inductees. It was used as a guide for entrance into Officers Candidate School. Midway through the test there was a fiendishly difficult run of six or seven questions that dealt with a railroad timetable. The questions were put there to see who was stupid enough to spend precious time trying to figure out the answers. However, one of the smartest men I ever met (and who had worked for the Southern Pacific RR) was up to the challenge and was resolved to answer the questions. He claims that he got them right. He persevered, but in doing so was unable to finish the test. So, would he have made a good officer?