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The size of the Negroid brain is significantly lower in volume

The stories and information posted here are artistic works of fiction and falsehood.
Only a fool would take anything posted here as fact.

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The size of the Negroid brain is significantly lower in volume than the Mongoloid or Caucasoid brain. The size of its frontal lobes are small and uncomplex, and the brain as a whole shows an unimpressive, moderate degree of fissuring (Lynn, 2006a, pp. 210-211; Rushton, 2000a, pp. 130, 133).

Converting brain volume into the number of neurons, Mongoloids average more than half a billion more neurons than Negroids (Rushton, 2000a, p. 133; Broom, 1918, p. 63-79; Howells, 1948, p. 118; Galloway, 2005, pp 31-47). East Asians (Han Chinese, Koreans, and Japanese) have the highest ratio of brain to body mass, but the record for brain size goes to Russian writer Ivan Turgenev, at 2012 gms (Corballis, 1991, p. 66). The heritability of brain size is about 0.9 (Lynn, 2006a, p. 67).

The ridges (gyri) between the groves (sulci) at the surface of the brain greatly increase the surface area of the cerebral cortex, the outer layer of the cerebrum. Since the cerebral cortex processes information, increased brain fissures increases the percentage of the brain that is cerebral cortex and should increase intelligence without increasing the volume of the brain, although this is difficult to establish quantitatively (Baker, 1974, p. 432). Negroids and some retarded people have fewer convolutions (fissures) in the cerebral cortex of their brains, where abstract thought is performed (Broca, 1858, cited by Rushton, 2000a, p. 106).
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There are many physical properties of the brain that are associated with greater intelligence. More intelligent brains show faster nerve conduction, less glucose utilization in positron emission tomography [PET scans], faster reaction times, faster inspection times, faster speeds in general, greater circumference and volume, smaller standard deviation in reaction times, greater variability in EEG [electroencephalogram] measures, shorter white matter T2 relaxation times, and higher gray-white matter contrast with magnetic resonance imaging [MRI] (Miller, 1994d). The thickness of the three outer layers (the supragranular layer) of the cerebral cortex (the six outer layers), increases from lower animals to man (Corballis, 1991, p. 67). The supragranular layer is 15% thinner in blacks than in whites (Vint, 1934). The nerves in blacks are reported to be larger (Burmeister, 1853).

The prefrontal area typically constitutes 29% of a man's brain (Herrick, 1956, p. 385). The human neocortex is over three times as large as expected for a primate matched for body size (Passingham, 1982). Compared to Caucasoids and Mongoloids, in Negroids the back of the brain is more developed and the front less developed (Broca, 1858, cited by Rushton, 2000a, p. 106; Bean, 1906; Levin, 1997, p. 105). This is noticeable in the more sloping forehead of Negroids and the length of their skull. Vision is processed in the back of the brain, hearing at the side, and planning and abstract thought at the front. Blacks have better hearing than other races (Murphy, 2006). Thus, a brain that is more devoted to one of these functions than to others will have a greater mass of brain tissue in that area and the skull shape will be expanded in that area.
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A frontal lobotomy, which removes the anterior frontal area of the brain, leaves a person conscious and seemingly normal, but unable to plan and take initiative (Penfield, 1957, p. 226). That is why Negroids have been compared to lobotomized Caucasoids (Simpson, 2003, p. 705).

Racial differences in the relative sizes of different areas of the brain are suggested by the way smoking affects the races. Compared to white smokers, black smokers absorb 30% more nicotine per cigarette and take longer to rid their bodies of the drug (Dr. Nora Volkow, "News Release," National Institute on Drug Abuse, Jan., 20, 2006). Numerous studies have demonstrated significant racial differences in the metabolism of tobacco-related products (Wilson, S.E., "Study Examines Racial Differences Among Children To Environmental Tobacco Smoke Exposure Cincinnati Children's Center for Environmental Health," Mar. 15, 2005). Since different neurotransmitters in the brain take up nicotine at different rates, this implies that blacks and whites have significant differences in the relative sizes of different areas of the brain. African Americans have much lower slow brain wave activity during sleep than do Caucasians, which also suggests structural differences in the brain ("Slow Wave Activity During Sleep Is Lower In African-Americans Than Caucasians," Science Daily, June 13, 2007).

In our journey to become human, our brain not only increased in size, but certain portions, such as the frontal lobes, the cerebral cortex, and its supragranular layer, increased disproportionately. Also, the sulci and gyri increased and deepened. Other parts, such as the olfactory bulb, devoted to smell, have increased less than proportionately. These changes were greater in Eurasians than in Africans.
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>>767769958
This nigga citing shit from before the civil war.

Way to cite totally unusable material. Git gud faggot.
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>>767769958
>>767769991
>>767770045

Citation needed.
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>>767770045
Nigga literally citing the show "The Simpsons" now.
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Easy test, bro:
Fuck black girl without condom
If she gets pregnant you're the same species
Spoilers
You are
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>>767769958
Elephants have significantly larger brain sizes. Why aren't they the dominant species? Why don't they have a sophisticated language for communication?

In fact, neanderthals had larger brains than we do today! How do you explain that?
http://www.tested.com/science/life/454072-why-bigger-neanderthal-brains-didnt-make-them-smarter-humans/

In conclusion, go get a brain scan or something because you're obviously retarded
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>>767770149

lol wat, all the cite dates are 19xx and 20xx

yeah it seems obvious blacks are dumber and more dangerous, what is an actually productive and fair solution? are blacks even dangerous without jews to motivate them to violence through hip-hop?
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I work in a science department. It's true.
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>>767770487
>Tiger fucks Lion and gets it pregnant
>Horse fucks Donkey and gets it pregnant

Must be the same species!
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>>767770501
>Converting brain volume into the number of neurons, Mongoloids average more than half a billion more neurons than Negroids (Rushton, 2000a, p. 133; Broom, 1918, p. 63-79; Howells, 1948, p. 118; Galloway, 2005, pp 31-47). East Asians (Han Chinese, Koreans, and Japanese) have the highest ratio of brain to body mass, but the record for brain size goes to Russian writer Ivan Turgenev, at 2012 gms (Corballis, 1991, p. 66). The heritability of brain size is about 0.9 (Lynn, 2006a, p. 67).
>The ridges (gyri) between the groves (sulci) at the surface of the brain greatly increase the surface area of the cerebral cortex, the outer layer of the cerebrum. Since the cerebral cortex processes information, increased brain fissures increases the percentage of the brain that is cerebral cortex and should increase intelligence without increasing the volume of the brain, although this is difficult to establish quantitatively (Baker, 1974, p. 432). Negroids and some retarded people have
both valid questions. that does not make op retarded since you have them though since there is likely an explanation
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>>767770589
yep, as a scientist myself i can confirm you that op is not only a retard but a massive bbc sucking fag (Dr C Poole "shichanneru" 2018)
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>>767769958
True
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>>767770487

There's DNA proof that Neanderthals interbred with Caucasoid Homo Sapiens. Guess they were the same species?
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>>767770487
>>767770879
The offspring of lion/tiger or horse/donkey are never fertile.

THAT'S what makes you the same species.
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>>767771154
So dogs and wolves and coyotes that interbreed constantly are all the same species?
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>>767769958
TFW the internet and parental neglect have made you idiots so fucking stupid you believe in phrenology.
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Wolves (canis lupus), coyotes (canis latrans), and domestic dogs (canis familiaris) are closely-related species. All three can interbreed and produce viable, fertile offspring — wolfdogs, coywolves, and coydogs. Through DNA analysis, scientists have established that the wolf is the ancestor of the dog.

dude
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>>767771295
>>767771694

thought I clicked you, sorry.
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fuckoff poltard
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>>767771134
Yes. you are the same species. different subspecies.

Homo sapiens sapiens (you)
Homo sapiens neanderthalensis (not you but same species you fucking mong)

Don't they make racists at least have some general biology class before they try to talk shit?
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>>767769958
Big if if if if if true
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>>767771495

This isn't phrenology you cuck.
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>>767769958
~4% NEANDERTHAL GENES
that's all the difference between central and southern african DNA and caucasian etc DNA
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>>767770501
Elephants have smaller brains than us by a huge margin when adjusted for body size, and they're still incredibly smart animals.
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The textbook definition for Phrenology is --- "the detailed study of the shape and size of the cranium as a supposed indication of character and mental abilities" ... ??
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>>767772328
yup.
neanderthals had much larger crania. and as always it's not so much how big they are, but how they're wired.
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The one great artistic thing that you ameritard did in the last century, the one wich comes from genius and not from money (like your cinema) was made by black people.
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>>767770549
Jews are smarter than whites. Therefore (by your reasoning), Jews are superior.

You are a filthy lying bastard. Here's a list of hiphop producers:

https://en.wikipedia.org/wiki/Category:Hip_hop_record_producers

How many Jews on this list, huh? Eat shit and choke on it, /pol/turd faggot fucktard.
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>>767773782
Not the racist op, but one can say that jews are not a race nor a species, in fact they are pure shit, i guess
Thread replies: 31
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