~.2 isn't really "huge".. Your source shows that the SAT is much more strongly correlated with other measures of aptitude. The SAT does indeed correlate slight

~.2 isn't really "huge".. Your source shows that the SAT is much more strongly correlated with other measures of aptitude. The SAT does indeed correlate slightly more strongly with income than the AFQT does, which could show the "gaming" of the test. Only a ~.03 stronger correlation though. Not particularly dramatic.