Right - but there is also a relationship between IQ and educational attainment. So controlling for it means that you're measuring something fundamentally different. That's fine, but you can't just control for things without having a valid theoretical construct to justify it. (Well, OK, you can, and people do, and it's great for getting p<0.05 if you don't care about getting meaningful answers about the underlying questions.)

also, to clarify things a bit: in my first comment i got a bit mixed up (fuck yeah lifelong learning disability) trying to make my point about lifelong attainment and the IQ analogy and made it sound like the paper in question was about IQ, which is incorrect.

The point stands however: controlling for educational background is a thing you can do in such a study as according to the factors I pointed to, and gwern's glib comment is wrong

No, your comment was glib. You suggest controlling for variables which are going to create overcontrolling and the sociologist's fallacy, and you know perfectly well that family background is not independent of IQ and attenuates the relationship and your suggestion creates only an uninterpretable mishmash of a marginal effect which includes some causal effects but quite arbitrarily excludes others which run through controlled variables. I did not choose my example of education/IQ/income casually, but picked one which is very common in the literature which people commit because they think they are being rigorous when in fact they're only fucking up their own results and making them less meaningful. One's intelligence is not independent of one's family or genetic background! This matters to testing and things which can change! (Because it gives you residual confounding, if nothing else.) By the way, the proper way to do what you may or may not want to do (because your comments are so glib it's unclear to me what DAG you have in mind or what causal effect you want) is sibling controls, not family background controls, and you will be unhappy as to the results when they have been done.

I mean jesus, of course family background is not independent of IQ, but assessments of family background can obviously be informative in understanding how we get from there to here. To say that, quote, "One's intelligence is not independent of one's family or genetic background" is a flaccid truism. Nonetheless particular comparisons within assessments of family background can obviously in principle be informative even if they are hard to do.

Your suggestion - with this fringe talk about "the sociologist's fallacy - is to eliminate any explanation from any study which does not assign success to invariant psychological metrics.

> I mean jesus, of course family background is not independent of IQ

Then what exactly do you think you are doing when you rant about how they didn't control for it?

> Your suggestion - with this fringe talk about "the sociologist's fallacy - is to eliminate any explanation from any study which does not assign success to invariant psychological metrics.

Nothing fringe about it, I'm afraid. This is well-understood in the statistics fields like causality you seem so loathe to actually learn about.

The point is: when you control for something and then go on to make causal claims, you are not making a minor tweak. You are assuming an extremely implausible causal model and making strong inferences from there about what are real causes and what are not. You have entirely failed to argue for a causal model which would justify simply controlling away family background etc, and it seems from how your comments handwave it away in favor of nothingburgers, you don't even understand what you're arguing for.

This is a total nothingburger, a long paragraph attacking a strawman of an argument you haven't even solicited the details of

The burden is on the person saying that 'such-and-such a thing should be done' to explain themselves. You failed to do that, and you have still failed to do that, and you spend your comments complaining about being criticized, so your comments remain nothingburgers.

honestly it's disappointing when i see people with training in stats make these comments: I'm a fucking poet if I'm anything at all and yet I find myself drawn into these ridiculous discussions about stats (in which I have no formal training) where I feel like I'm one of the only people in the room who knows how to divy up numbers

it's a triviality to say that you can control for educational attainment (and opportunities for education as well as class) when accounting for differences in IQ: it's hard to do in practice because social science is complicated and requires ACTUALLY DOING THE SCIENCE so gwern's glib comment is just wrong here

clearly we're talking about the impact on IQ of whatever factors we make up to describe IQ, and obviously, and provenly, education (and therefore the ability to get education) is in play here, which gwern's glib rebuttal ignores

Really Gerard, are you going to lecture me on this? I am aware of practice, and more importantly, I am aware the IQ gains from education are hollow, from the Milwaukee Project on to Ritchie's paper on education increases. The practice that raises your score does not affect all subtests the same: increasing your vocab does not affect your backwards digit span or reaction time, or increase your longevity or income or...

And that's not relevant anyway. Are you trying to suggest people only get into SMPY because their parents made them practice the SAT? In the 1970s and 1980s, hardly anyone would have even heard of SMPY before their kids took the test in school.

you know as well as I do that zip codes are more heritable than IQ

and predict results pretty well too

No, I don't, because they're not: are identical twins more likely to live in the same zip code as fraternal twins? Seriously, think about it for a second. Or I'll put it this way: how much more likely are identical twins adopted out to live in the same zip code?

Nor does zip code predict remotely as well as IQ.

Are we just making up definitions of heritability now?

http://bactra.org/weblog/520.html