IQ tests measure abstract reasoning ability. That’s not nothing, but it ain’t everything either.
The traditional SAT test measures abstract reasoning ability AND reading comprehension. The weights assigned to the two parts were chosen so that the average scores of boys equals the average scores of girls. For a relatively cheap, standardized exam, this is a pretty good.
That's dumb. How can a test be predictive if it's weighted to support a particular outcome?
/johnny