There is pretty clear relationship between, say, SAT scores and measured performance in college but that correlation is easier to accept intuitively. (Given that college GPA depends to a large degree on performance on tests.)
According to a psych test research program, I have a very high IQ. Not sure what it is until the program's over, but apparently I beat all of the doctors and grad students involved. Not bragging, just making some anecdata.
That said, apparently I'm very difficult to manage. When managed properly, though, I do really good work (so I'm told). When managed badly, it's a completely different story - and usually at places that require IQ tests ;).
All an IQ test does is gives you a reason NOT to hire someone. Why not work on building the social skills required to identify smart candidates if you're trying to hire smart candidates?
Given how psychological experiments work, what's more likely - that you have a higher IQ than everyone else involved in the program, or that one of the things they're studying is the effect of believing you have a higher IQ than everyone else involved in the program?
That relationship may not be as strong as you think and it certainly doesn't hold true for all standardized tests. LSATS often are negatively correlated to grades (which surprised my professor when he was the dean of the law school).
There is pretty clear relationship between, say, SAT scores and measured performance in college but that correlation is easier to accept intuitively. (Given that college GPA depends to a large degree on performance on tests.)