= 27d567bc2d48d9f40e9ccc20ea370b15)
James_Miller comments on Article on IQ: The Inappropriately Excluded - Less Wrong
You are viewing a comment permalink. View the original post to see all comments and the full post content.
= 783df68a0f980790206b9ea87794c5b6)
Loading…= b715d02e85f7b3b4ae65ca3d3e450868)
Subscribe to RSS Feed
Powered by Reddit
= f037147d6e6c911a85753b9abdedda8d)
You are viewing a comment permalink. View the original post to see all comments and the full post content.
Comments (25)
First of all, IQ tests aren't designed for high IQ, so there's a lot of noise there and this would mainly be noise, if he correctly reported the results, which he doesn't.
Second, there are some careful studies of high IQ (SMPY etc) by taking the well designed SAT test, which doesn't have a very high ceiling for adults and giving it to children below the age of 13. By giving the test to representative samples, they can well characterize the threshold for the top 3%. Using self-selected samples, they think that they can characterize up to 1/10,000. In any event, within the 3% they find increasing SAT score predicts increasing probability of accomplishments of all kinds, in direct contradiction of these claims.
But they might work on children with high IQs because you can compare their performance to older children. A genius 8-year-old does as well as a typical 14-year old, whereas a super-genius 8-year-old does as well as a 16 year old.
Doesn't that sound like my second paragraph?
But there is an assumption here, that childhood IQ predicts adult IQ. In fact, it isn't very good at age 8. The SMPY age of 12 is better, though by no means perfect. When I say "good" or "better" I mean, of course, stability at the center, which might not predict stability at the tails. When SMPY finds that age 12 tests predict life outcomes, they are testing this directly. But what we really want to know is whether the SAT score at age 12 adds information to the low ceiling SAT score at age 17. I think that the SMPY results are strong enough to guarantee that, but I haven't checked.
Yes, my error.
For testing error/randomness reasons you would think so even independent of the low ceiling problem.