There is. They are one of the few parts of psychology that are based on hard data. University admissions test are, in fact, mostly tests of IQ. So are military

There is. They are one of the few parts of psychology that are based on hard data. University admissions test are, in fact, mostly tests of IQ. So are military recruiting tests. (The military is super serious about weeding out people dumb enough to crash a boondoggle.)