The single best study of U.S. race and brain size ever done was by Ho et al (1980). They found that at age 25, the average sex-combined brain weight of white Americans (at autopsy) was 1455 g and the average brain weight of black Americans was 1333 g. I suspect the brain weights of both races have since increased thanks to the nutrition that causes the Flynn effect (Lynn 1990)(Figure taken from Jensen (1988), though even in 1980, the white male brain weight at 25 was absolutely colossal:
Unfortunately Ho et al only reported standard deviations for the entire sample and not specific ones for different age groups. However a study of South African black brain weights found that at age 21 to 30, the SD is 122 g for men and 103 g for women for a within sex average of 113 g (Govender et al, 2018)
If we assume a similar SD within U.S. races, then the sex combined age 25 black-white brain weight gap gives a within sex brain weight gap of 1.08 SD which is identical to the 1 SD black-white IQ gap observed since WWI.
Of course that’s not to say that the black-white IQ gap is entirely caused by the black-white brain size gap. The correlation between brain size and IQ is “only” about 0.4 (Jensen 1998)(Gignac & Bates, 2017) so only about 40% of the gap might be caused by brain size and that’s assuming the correlation is entirely causal.
However individual level correlations can more than double at the group level because individual sources of error cancel out. For example, Rushton (2009) found brain size correlated 0.91 with IQ across 10 population groups.
Pumpkin Person 
I do not understand,
0.4 should be the correlation of head circumference to IQ
but brain size in cubic centimeters is not head circumference and should be a high correlation?
No the head circumference correlation with IQ is about 0.25 and that’s because brain size and head circumference “on;y” correlate about 0.67 so it’s predictable head circumference will predict IQ only 67% as well as directly measured brain size.
You’re right that correlations are higher if they’re scaled the same way but the much bigger reason is head size is only a crude proxy for brain size even if both were measured by circumference. Also circumference ignores the vertical dimension of brain size which further lowers its correlation with IQ
Govender et al and Salami et al show different results from the usual suspects. All in all—contra hereditarians—the difference isn’t that big and then then it’s not causal for IQ scores/”intelligence.” (Daily reminder that Gould was right about Morton—a claim that was defended by numerous authors from Lewis et al.)
And Jensen’s default hypothesis is false so the black-white IQ gap is environmentally caused.
Daily reminder that rr is a LIAR!
sad!
…it was concluded that the bias came from Gould…
sad!
https://en.wikipedia.org/wiki/Samuel_George_Morton#Allegations_of_bias_in_data_collection_and_interpretation
daily reminder that rr is a LIAR!
Nah that’s wrong, as subsequent defenses have shown (Weisberg, 2014; Kaplan, Pigliucci and Banta, 2015; Weisberg and Paul, 2016; Mitchell, 2018). Gould was right about Morton.
At least it’s on topic
“Gould was right about Morton” thanks for the laugh RR. SJG may have been a good biologist in his area of expertise, but any fact that even remotely challenged his communist ideological bias became targets of his fraudulent attacks. Samuel Morton’s work simply being the most well-known, given that Gould wrote a whole book on it, in which he straight-up just made shit up – https://www.nytimes.com/2011/06/14/science/14skull.html
As I said previously some time ago paraphrased: “rr thinks memorization is all there is to intelligence.” Him saying intelligence is a crystallization of knowledge as a social dynamic process totally ignores fluid intelligence which is the ability to juggle multiple quantities of information at once, taking them apart and putting them together in ones head. It is as if he totally ignores what visual/spatial working memory is and puts in its place a tape recorder for what intelligence he is good at (verbal tilt).
I don’t ignore that – that’s part of the definition too, and it’s also socially embedded (eg RPM tasks and other VS tasks). What you said is also irrelevant to my comment.
RR what do you think about critical thought? do you think we can derive some value from this in assessing differences or no?
i think intellect is measurable when you have differences in ability firstly like the study of quantum mechanics.
if you believe emotions exist then why do some people emote differently than others?
RR is refusing 2 answer some very important questions.
I think the point is that some people have more working memory (verbal and visual/spatial) than others regardless of taking any test. Some people are geniuses and this cannot be trained. Training has moderate effects but cannot create geniuses.
What is the social embedded in? It either has to be self-explanatory or ultimately embedded in something else, which you have to understand at a mathematical level (or not) to state it is unquantifiable.
I think Indians and Jews would have the smallest brains. Obviously there is variation in people so that’s my best guess.
also daily reminder that peepee and flushton are LIARS.
wypipo have the biggest brains! FACT!
BECAUSE they are the tallest. FACT!
the so-called “asians” with bigger brains are arctic peoples NOT run of the mill chinese, korean, or japanese.
Aren’t Japanese a lot taller than Ainu though?
Just from experience being around East Asians and watching/reading East Asian media it’s pretty clear to me they have larger brains or at the very least, behave as if they have larger brains. They grasp concepts more easily than every other race and have clearly have a greater consciousness of everything around them in details than most any group except maybe the highest IQ Whites.
You see this in the functionality of their engineering and technology, and safety and general affluence of their cultures and art.
However, you don’t see this in philosophy or thinking at very end of the bell curve as much I think. Maybe that’s a cultural thing, a global societal thing, other genetic traits, a lack of dominance by East Asians compared to caucasians, or maybe it’s just that White society doesn’t pay enough attention to the philosophical contributions of Asia (I don’t think it’s that though).
You can confirm some of Flushton’s observations just by observation of certain things, and not being a complete open-minded libtard.
*clearly have a greater consciousness of everything around them in the details
By open-minded libtard I mean one who will never make tentative judgments about groups or cultures as averages.
But let’s cut the malarkey… You don’t have to be a genetic determinist but you also shouldn’t deny that the laws of biology generally have to obey the laws of physics (which are laws… meaning they determine things) and the mind is limited by the information it can manipulate… and we are all manipulating mostly the same kind of information in the world, aren’t we? That’s kind of necessary for us to be culturally compatible. Which means it can generally be quantified.
Sad?
i assume small headed, short wypipo are retarded.
rr’s hairstyle is a LIE!
i am short South Asian but i have a 23 inch head circumference which is huge in someone my height.
i am a pretty big dude so overall body mass wise it could be average. i am broad shouldered wide bodied individual!
I wonder is there any data on Jewish brain size?
Say pumpkin, I was going to do some work on admissions criteria for a high IQ society, and I was wondering if you might help me with the basics. Do you have any idea how mensa et al. set the criteria, or what methodology would you use to approach the problem. My impression is that historically their methods have not been that precise.
Yes there is data on Jewish brain size but it’s very old. As for Mensa admission criteria, I know they require an SAT score even higher than their top 2% of America cut-off. I don’ think they knew how to figure it out so they decided to turn away qualified people rather than risk allowing unqualified people like pill.
yeah, I’ve read that post. You made range restriction arguments that the slowest kids don’t even take the sat. What happened to Philosopher? I miss him! Please say you didn’t block him. For example, back on iq, how would you correlate something like lsat with iq? The range restriction problem there seems even more puzzling.
Nothing happened to him. He was just commenting on the weekend. I’ll be doing an article on the old LSAT soon
that would be great. Please convert to the new lsat bc that’s what I need. I’m curious why the high IQ societies shun the post 1995 SAT. It seems that the scores when corrected for the differences in scoring, correlate well with IQ. I have a feeling that there’s not a lot of rationale between not accepting the new, only that when they changed it, there was not a good conversion equation between the two, so they just didn’t know what it meant. There was never any really mystical reason why they don’t accept it. And somehow people just assumed that there was and it stuck like that. But I have a feeling you could use the new SAT when corrected. I wonder, I like the score of pairing method for lsat, but we don’t have much data. Do you think it would be useful if I got a class of law students to report the LSAT, SAT, and ACT for a dataset to do some statistics an upon? I know a lot of law students. Some original fieldwork in other words.
Do you think it would be useful if I got a class of law students to report the LSAT, SAT, and ACT for a dataset to do some statistics an upon?
If they’re from an average law school that would be useful but if they’re from an elite law school they might regress to the mean on the SAT/ACT, & thus the score pairing would underestimate how high their LSATs really were. And at this point the SAT has such a low ceiling that it’s virtually useless for testing anyone smarter than the average lawyer. but the ACT might work.
If you know the old SAT score of any people who took the old LSAT that would be really interesting. Lion provided me his scores.
oh, really? Now why would you say the new SAT has a low ceiling? I’m not arguing against that, I would only like to know your rationale.
By my calculation it has a perfect score equates to IQ 138:
Of course that’s based on linear extrapolation and in retrospect sounds absurdly low cause it would mean 1 in 200 17 year olds would score perfect every year which I highly doubt is the case.
it could be right though, because you have to take into account that not all people fully apply themselves to the test or have developed the requisite math and reading skills. There is an element of achievement. You have to take into account that standardized tests are not precisely IQ tests.
The commonality between anime and aeoli is that they’re pathological liars.
I think aeoli can get away with it because he’s autistic but I dunno why anime keeps lying.
and then when you call him out on it he becomes so defensive.
But I understand they’re just trolls with no life experience.
LOL! anime is honest to a fault.
All I said was that I do not think I meet the criteria of being a narcissist.
I believe loaded because he was bullied so much during college that he has a hard time with people because of his bipolar.
I think that things could get better for him if he had less anxiety/paranoia but I am not trying to be mean in any way.
You’re the opposite of a narcissist. In fact I’d go so far as to say you’re not narcissistic enough. You actually need more ego.
from the knowledge ive gathered in my discussions he is very Machiavellian. he knows how social dynamics work and how ruthlessness can be achieved!
he is very socially aware all he needs is a touch of dominance in his relationships which would not be unachievable 2 or 4 him either.
in that way i was just exaggerating because he doesnt lie in the sense that we lie. he is a Machiavellian!
he knows what things go where and he gets them there!
LOADED seems like the kind of guy who will backstab you but blame it on you because he claims you are autistic or didn’t sufficiently bow down to his wisdom. Has he ever thought that maybe other people may have had similar experiences and that is why they approach him or the rest of the world with caution?
And also that most people, most of the time, don’t listen to abstract or esoteric ramblings of others unless they are really in the mood to?
The pathological lying thing has nothing 2 do with narcissism if anything narcissists can be more honest. I was saying youre a pathological liar because you rely much on opportunism and manipulation the same way Oprah would.
which is not a bad thing but i think it makes sense here.
maybe i just mishandled the truth here but i wont compromise the notion that Machiavellianism in an intellectual sense can be relatable 2 lying.
in that way i think it can be dangerous! but he still maintains honesty in other respects.
Also they are probably not simply autistic, maybe more aspergers. Anime himself has said he is not autistic, I thought. He has Avoidant Personality Disorder.
Of course a lot of these things seem to overlap.
i think Aeoli is a full blown autistic person. as 4 your own above comment its been established by both Anime and I that am indeed the more intelligent of the two.
in the minds of retarded people like Pill its irrelevant but i think its actually something we can work off of in establishing a better understanding of things.
PP don’t post my comment about anime if it offends you but please be open minded and post the one in the article where you estimate my IQ!
You don’t have posting this one either.
Why are you disrespecting anime all of a sudden? I thought you guys were friends. That’s not cool.
lets just say Anime has a positivity bias whereas i have a negative one.
Anime is optimistic about the future. whereas i want opportunities. those things collide and make either good things happen or sometimes bad.
this is why i feel the way i do about you now!
Mentall illness.
just because im friends with the guy doesnt mean im going 2 put him first in everything. that expectation PP and Pill have of me is clearly a mental illness of itself!
Pill always wants me 2 do stuff 4 white people. he doesnt consider that maybe i dont care about whites at all.
or even despise them. he thinks the colored people have 2 always bow down and give allegiance 2 white folk when damn well thats not appropriate!
Pill is an insignificant racist!
I have learned a great deal from him. he taught us money motivation hustle. i want us going further than just that.
keep on keepin on as the white man says.
I know he and I share something deep. let it flourish instead of stall out.
affirmations of and by a typist!
this comment is about the Prophet PBUH. Eid Mubarak all my Muslim readers!
we Muslims must wage war against that idiot PP!
i think ive been a nice guy here and have helped many. unfortunately the reciprocity and love is all fake here.
theres no need in continuing this demented education of this blog. i dont write so that i may appease the commenters on this blog but instead break bread with and give knowledge where its needed especially in an audience!
What do you want help with?
getting my comments posted because that idiot PP never seems 2 post them!
anyways i think its okay because i wont want 2 post on here any more its not healthy 4 anyone 2 do so
you think youre making contributions but they never end up being worthwhile even in the smallest senses
anyways i hope this is my last comment on this blog at least 4 awhile because PP is an unappreciative fruitcake who has taken advantage of many
he/she whatever the fuck PP is probably spends no time actually valuing any of us
and since i was the most loved commenter here by an audience that will never know me…..
well.
There’s a silent majority that will be glad to see you gone.
I often post comments to clarify my thoughts, and save the the text.
I don’t go back on them often but the more time passes, I probably will.
RR does the same thing, I think.
LOADED, peepee, and lurker all need to GO BACK TO PAKISTAN!
sad!
since this is my last comment here i hope that idiot PP has the decency and self respect 2 post this:
goodbye PP friends of PP and all the shitheads who read this blog!
PP is a gaslighting faggot fool! let him burn in his Hell.