Mathematical ability seems to be a high sensitivity test for this. I cannot recall ever meeting someone who I concluded was smarter than me who was not also able to solve and understand math problems I cannot. But it seems to have a surprisingly low specificity-- people who are significantly better at math than me (and this includes probably everyone with a degree in a math heavy discipline) are still strangely very stupid.
Hypotheses:
Ideas?
I'm going with number 2 on this one (possibly a result of doing 4 either 'actively' or 'passively').
I have a very high error rate when doing basic math and am also quite slow (maybe even before accounting for fixing errors). People who's ability to understand math tops out at basic calculus can still beat me on algebra tests. This effect is increased by the fact that due to mathematica and such, I have no reason to store things like the algorithm for doing polynomial long division. It takes more time and errors to rederive it on the spot.
At the higher lev...
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