An IQ test (there are multiple types) tests crystallized intelligence and fluid intelligence. The way I have heard them described is basically crystallized intelligence is a test of accumulated knowledge/previously seen patterns versus fluid intelligence being the ability to see a pattern in a novel situation and figure out how to solve the novel situation (on-the-spot problem solving). They are linked. I have also read from different sources that high fluid reasoning can lead to an increase in knowledge acquired. For the SAT to be a genuine determinant of the difference in ability we would have to have all people taking the exam to have the same preparation(school/sub-culture/country/teachers and pre-test work). One could compare it to an IQ test in the sense that it is testing learned information with novel problems? IIRC the test correlates with college/university success because it can showcase the combination of inherent skill and preparation necessary to succeed in a college environment (I would assume this is heavily debated).

Here is the Wikipedia article on the difference if you want to look up sources or dive into this topic more: https://en.m.wikipedia.org/wiki/Fluid_and_crystallized_intel...

If you want to research the different types of IQ tests: https://en.m.wikipedia.org/wiki/Intelligence_quotient

I'd say that's fairly accurate—in general, it doesn't really test for skills you would learn above 8th Grade, and mainly just tries to see what you're capable of.

Prior to 1994, the SAT could serve as an IQ test. Scores could be used for admission into high-IQ clubs.

The 1994 changes slightly broke that, particularly at the high end. Subsequent changes, for example the removal of analogies, have moved to test away from measuring IQ. Today it really isn't an IQ test at all. It's an achievement test.

> It's an achievement test.

what's that?