4 ms·

If you control for race and income the effect of blue eyes will probably go away. The effect of IQ does not. Regarding brainteasers, there is no evidence that

• ggggtez 9y ago
  For that line of reasoning to work, you'd have to prove that the IQ test only presents novel challenges unrelated to practice tests. I think that's a much higher bar than you are thinking, and I'd be interested to know how they would prove it.
  • laretluval 9y ago
    Obviously in the limit every test shares something with some other test. But it's not like it's hard to find cases where practice on one task fails to generalize to another task: in fact it's the norm, and it's exactly this empirically observed lack of generalization that motivated the concept of IQ and g in the first place. For example, see https://www.ncbi.nlm.nih.gov/pubmed/27474138 https://www.ncbi.nlm.nih.gov/pubmed/27474138