BLM Insurrectionist Screams 'I Can't Wait Until Black People Lynch White People'

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[–]ActuallyNot 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (3 children)

This is from separated twin studies?

They would at least have got sufficient nutrition.

There's something significant about environment in the West because IQs today are about 15 points higher than in the middle of last century.

The genetics are the same, only the environment was different. And that's effect is greater that the current difference between races, which is why it's not proven that the races are different: the timing of that increase could be simply a few generations later.

[–]GConly 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (2 children)

No they aren't from separated twin studies. Same family studies.

They are comparing the heritability of IQ between the lowest SES and the highest. And a couple of studies chucked race into the mix.

There was no difference in heritability. So the claim that lower SES causes lower IQ through poor environment (in western welfare states) is not supported.

The egalitarian supporters were pinning their hopes and reputation on these studies show heritability was lower in adults, because it was lower in kids. They still push this argument, because most people don't know that heritability varies vastly by age. It's about 0.2 in little kids and 0.8 post 18.

something significant about environment in the West because IQs today are about 15 points higher than in the middle of last century.

The average poor kid today has a significantly better chance of surviving childhood diseases than a rich kid a hundred years ago. The essential nutrition of a poor kid and a rich kid are both above the level to maximize brain development. If someone's kid is starving to death in the west is probably because of child abuse.

It's not well known but severe illness in kids lower IQ, and height. Go back a few years and surviving severe illnesses like measles and whooping cough was standard for adults.

And the genetics are not the same. I've seen at least a couple of papers showing genes for higher ed dropping off in the west in the past few decades (welfare state) and one study looking at the same that shows strong selective pressure on said genes since the paleolithic in Europe.

And yes we are seeing group IQ dropping slowly as a result. The Flynn effect is in reverse.

I'd so like to point out that software to calculate height based on a DNA sample that works on Eurasian males doesn't work on African males, because some different genes are involved. Same thing applies to IQ. ,Which does rather screw with "homogeneous for brain affecting genes" claim.

It's also true that the brain's folding pattern and internal structures vary by ancestry, as do the frequency if various genes known to affect brain function and intelligence.

We aren't a homogeneous species fir a whole range of things.

[–]ActuallyNot 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

The average poor kid today has a significantly better chance of surviving childhood diseases than a rich kid a hundred years ago.

Yeah, but the IQ has increased by about 3 points per decade since the 1950s and 1960s as well. Well into the antibiotic era.

I've seen at least a couple of papers showing genes for higher ed dropping off in the west in the past few decades

Okay. News to me that we have higher education genes. Can you point me to some of these papers?

And yes we are seeing group IQ dropping slowly as a result. The Flynn effect is in reverse.

Maybe. That's still controversial. (see The Flynn Effect: A Meta-analysis,Trahan et al, . (2014) Psychological Bulletin, 140(5), 1332–1360, for example)

We aren't a homogeneous species fir a whole range of things.

Right but there's not a lot of genetic variation in humans compared to other animals. And claims that there are established differences in intelligence between races is bollocks. We simply don't know enough about intelligence to make that claim.

[–]GConly 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Yeah 2014... is a bit old to be seeing the reverse Flynn effect. It's accepted as a thing at this point.

Flynn effect and its reversal are both environmentally caused 2018

THE REVERSAL OF THE FLYNN EFFECT 2020

The negative Flynn Effect: A systematic literature review

Selection against variants in the genome associated with educational attainment 2017

Right but there's not a lot of genetic variation in humans compared to other animals.

Actually not true. The fst between human races is about normal for large mammal sub species, which gets glossed over. And it doesn't actually take a whole lot of variation, just variation in gene frequency. For example a couple of genes known to affect brain development are very common in Eurasian samples but rare in African (ASPM1 and mcph1). They also have a TMRCA of about 40k, well after the split of African and non African populations.

And claims that there are established differences in intelligence between races is bollocks.

I take it you won't be happy if I post the gentile Vs Jew paper then.

The difference has been shown relentlessly in testing over many decades. The only thing being argued over by even the most hardcore egalitarian is the cause at this point.

Human intelligence is just as much affected by environmental selective pressure as any other trait. It's barking mad to think otherwise.