I don't think it determine intelligence properly though, my father has an incredibly high IQ and he's brilliant in some subjects like maths or science but he has no critical thinking. I think aintelligence is nothing without a bit of a critical mind and ability to reflect upon things, doubt them, judge them , think without relying only on past experiences and be both open-minded and narrow-minded.
IQ is just a relative figure. It's useful when it comes to diagnosing learning difficulties and definitely say something about one's abilities but it doesn't take into consideration everything.
Skills don't always come with other form of intelligence. I admire my brother for being able to use theories and apply them practically (considering that he's more of a doer than I am) but he lacks critical thinking as well, and I think it's sad (not the righ word but I can't find any other) that many capable people don't develop their thinking and act stupid.
The fact that the society rely so much on IQ test to define intelligence prove as well that we are in a society which doesn't really think...