Machine learning program estimates IQ from MRI with r = 0.7. But can't tell if retrodiction or prediction. Thoughts?http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0117295 …
@gwern I meant if they tested it on the same data they derived it from. Fakey's saying they didn't.
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@slatestarcodex Ah, whether they overfit? Does Fakey object to the crossvalidation procedure they used or something? -
@gwern No, I'm interpreting Fakey as saying it's legit. - 3 more replies
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