Why Are Individual IQ Differences OK?

I don't see a good way to tell the difference between a low IQ score due to actually being less intelligent versus a low IQ score due to nurture-related reasons such as the following:

As the saying goes, "Life is an IQ test." The predictive ability of IQ on income (and most other statistics of interest) is very similar for each race, which suggests that differences in measured IQ scores map onto differences in life outcomes. To the extent that a medical condition makes someone test poorly, it generally also makes them live poorly. (There are a ... (Read more)(Click to expand thread. ⌘/CTRL+F to Expand All)Cmd/Ctrl F to expand all comments on this post

As the saying goes, "Life is an IQ test."

That's a saying? Are there also sayings "Life is a test of height.", "Life is a test of immune system efficiency" and "Life is a test of facial symmetry"? We may as well round out the set. Anything of comparable test significance that I missed? Oh! "Life is a test of breast perkiness" and "Life is a test of capacity for situation-appropriate violence."

(I actually agree with the point of the rest of the paragraph.)

1Epiphany6yAs a stand-alone statement, I would probably leave this alone. But as a response to "What about nurture", the first thing that comes to mind is: Has Vaniver adequately corrected for the just world fallacy? Ok, that's interesting, but it does nothing to rule out nurture factors that would impact both IQ and income. I agree that IQ is mostly genetic and that IQ does seem to correlate with a lot of factors. I'm not saying IQ does not exist. What I am saying is that, specifically when it comes to black people, there are other factors that are definitely influencing performance and IQ scores. Therefore I reject claims about IQ and race that haven't controlled for known factors. Actually, when I read that section (it starts with "What scholars"), I parsed it like this: Jason explicitly says that there's a scientific consensus on many issues that seem controversial to journalists. Jason states that virtually all psychologists (not scientists) believe there is a general mental ability factor (That he's not saying is specifically connected to race). Then, without qualifying these statements with anything along the lines of "most x believe", he states: "In terms of group differences, people of northeast Asian descent have higher average IQ scores than people of European lineage, who in turn have higher average scores than people of sub-Saharan African descent." I will not assume that this sequence of claims means that the group differences statement is also something scientists have a consensus about. If I did, that would be a non-sequitur. Also, below that, he writes: "It is possible that genetic factors could influence IQ differences among ethnic groups, but many scientists are withholding judgment until DNA studies are able to link specific gene combinations with IQ." This is where I stop reading the article because it is clear to me that it does not say "there's a scientific consensus that there's a link between race and IQ". If you have a credible source for t

Why Are Individual IQ Differences OK?

by Eliezer Yudkowsky 2 min read26th Oct 2007527 comments


Idang Alibi of Abuja, Nigeria writes on the James Watson affair:

A few days ago, the Nobel Laureate, Dr. James Watson, made a remark that is now generating worldwide uproar, especially among blacks.  He said what to me looks like a self-evident truth.  He told The Sunday Times of London in an interview that in his humble opinion, black people are less intelligent than the White people...

An intriguing opening.  Is Idang Alibi about to take a position on the real heart of the uproar?

I do not know what constitutes intelligence.  I leave that to our so-called scholars.  But I do know that in terms of organising society for the benefit of the people living in it, we blacks have not shown any intelligence in that direction at all.  I am so ashamed of this and sometimes feel that I ought to have belonged to another race...

Darn, it's just a lecture on personal and national responsibility.  Of course, for African nationals, taking responsibility for their country's problems is the most productive attitude regardless.  But it doesn't engage with the controversies that got Watson fired.

Later in the article came this:

As I write this, I do so with great pains in my heart because I know that God has given intelligence in equal measure to all his children irrespective of the colour of their skin.

This intrigued me for two reasons:  First, I'm always on the lookout for yet another case of theology making a falsifiable experimental prediction.  And second, the prediction follows obviously if God is just, but what does skin colour have to do with it at all?

A great deal has already been said about the Watson affair, and I suspect that in most respects I have little to contribute that has not been said before.

But why is it that the rest of the world seems to think that individual genetic differences are okay, whereas racial genetic differences in intelligence are not?  Am I the only one who's every bit as horrified by the proposition that there's any way whatsoever to be screwed before you even start, whether it's genes or lead-based paint or Down's Syndrome?  What difference does skin colour make?  At all?

This is only half a rhetorical question.  Race adds extra controversy to anything; in that sense, it's obvious what difference skin colour makes politically.  However, just because this attitude is common, should not cause us to overlook its insanity.  Some kind of different psychological processing is taking place around individually-unfair intelligence distributions, and group-unfair intelligence distributions.

So, in defiance of this psychological difference, and in defiance of politics, let me point out that a group injustice has no existence apart from injustice to individuals.  It's individuals who have brains to experience suffering.  It's individuals who deserve, and often don't get, a fair chance at life.  If God has not given intelligence in equal measure to all his children, God stands convicted of a crime against humanity, period.  Skin colour has nothing to do with it, nothing at all.

And I don't think there's any serious scholar of intelligence who disputes that God has been definitively shown to be most terribly unfair.  Never mind the airtight case that intelligence has a hereditary genetic component among individuals; if you think that being born with Down's Syndrome doesn't impact life outcomes, then you are on crack.  What about lead-based paint?  Does it not count, because parents theoretically could have prevented it but didn't?  In the beginning no one knew that it was damaging.  How is it just for such a tiny mistake to have such huge, irrevocable consequences?  And regardless, would not a just God damn us for only our own choices?  Kids don't choose to live in apartments with lead-based paint.

So much for God being "just", unless you count the people whom God has just screwed over.  Maybe that's part of the fuel in the burning controversy - that people do realize, on some level, the implications for religion.  They can rationalize away the implications of a child born with no legs, but not a child born with no possibility of ever understanding calculus.  But then this doesn't help explain the original observation, which is that people, for some odd reason, think that adding race makes it worse somehow.

And why is my own perspective, apparently, unusual?  Perhaps because I also think that intelligence deficits will be fixable given sufficiently advanced technology, biotech or nanotech.  When truly huge horrors are believed unfixable, the mind's eye tends to just skip over the hideous unfairness - for much the same reason you don't deliberately rest your hand on a hot stoveburner; it hurts.