[quote]otar wrote:
[quote]TigerTime wrote:
[quote]otar wrote:
[quote]TigerTime wrote:
[quote]otar wrote:
[quote]TigerTime wrote:
[quote]orion wrote:
Which does not necessarily mean that IQ tests test what would traditionally be called intelligence, whatever that is. [/quote]
Also a good point. IQ correlates with average brain size almost perfectly until you look at the Inuit. They average an IQ of about 98 or so, despite having the largest brains.
As it turns out, the reason for this is because the Inuit have prodigious spacial memory, a skill requiring more brain mass. Spacial memory is an aspect not really relevant to modern IQ tests, even ones that control for ‘G’ and when an alternate IQ test was produced that specifically tested for spacial memory, the Inuit scored an average of 106 versus the white median of 100. The proposed reason for their advanced spacial memory is due to the demands placed on them by the terrain they live in. The areas they live in are barren and any given area is nearly indistinguishable from any other given area, so it’s vital that the Inuit are capable of navigating around using seemingly insignificant landmarks.
So you have something to relate this to, the average North East Asian Mongoloid IQ is 105 versus the 100 white median.
So, IQ tests are imperfect. It’s absolutely possible that blacks posses a form of intelligence not recorded by IQ tests, so if you guys want to make a valid counter argument, THIS is where you need to be. I’m deliberately giving you guys a handicap because, frankly, this is the sort of information you guys should already be privy to before you decide to step up to bat with me on this issue. I can understand why you guys are so ignorant when it comes to this field, but that’s no excuse for the arrogance some of you express in your posts. I’m absolutely willing to hear you out and even change my position if you can show me to be wrong, but the vast majority of you need to step up your game if this is your goal.
Also, any form of intelligence blacks may be prodigious in that is not recorded in conventional IQ tests has already been shown to have no effect on the average black income and the general state of Africa. Hmm, I suppose I didn’t give you much of a handicap after all… [/quote]
Please don’t speak out of your ass, you’re lack of knowledge about basic neuroscience is becoming a bit too glaringly obvious. Mental capacity is more correlated with brain surface area than over all mass, numerous animals having larger brains than our own (elephants, average sperm whale brain mass is 7X that of a human) while brain mass is more closely correlated to body size than anything else. More surface area=more grey matter=more of the brain that actually has to do with what is traditionally thought of as intelligence.
Also while certain brain areas do display more electrical activity during different thought processes to definitively say that they are mostly associated with that region is again laughable, there is far too much interplay at an electrical and non-electrical level to posit such claims.[/quote]
I actually don’t see how what you’ve said is a counter argument. I’m pretty sure I stated that not only do some races have bigger brains, but the grey to white matter ratio is also different, which makes sense given what you’ve said about grey matter and intelligence.
Also, your cross-species argument is silly. I’m well aware that intelligence is more accurately predicted when you look at the brain-to-body mass ratio, but given that we’re talking about one species, Humans, and we’re all about the same size, this argument is a non-sequitur.
And to finish off your hubris-littered haymaker of a counter argument, “Recent research indicates that, in primates, whole brain size is a better measure of cognitive abilities than brain-to-body mass ratio. The total weight of the species is greater than the predicted sample only if the frontal lobe is adjusted for spacial relation.”
http://content.karger.com/ProdukteDB/produkte.asp?Aktion=ShowAbstract&ProduktNr=223831&Ausgabe=233218&ArtikelNr=102973&ContentOnly=false
Please, at least build up a Wikipedian understanding of this topic before charging in so boldly. [/quote]
While your use of google scholar is impressive and I appreciate how you cherry picked something from the first page to support something close to what you said, there are years of research garnering more support for relative brain mass, cortical convolution, cortical thickness, etc. than absolute brain mass for being a greater indicator of intelligence.
Neuroanatomical correlates of intelligence - ScienceDirect (2009, neuranatomical features)
In vivo brain size and intelligence - ScienceDirect (1991, relative brain mass)
http://www.iaeng.org/publication/WCECS2011/WCECS2011_pp428-432.pdf (2011, cortical complexity)
Also try not to quote studies discrediting your position brohan, weakens your argument.
Tiger time: “I’m well aware that intelligence is more accurately predicted when you look at the brain-to-body mass ratio…”
Tiger time immediately quoting a study saying something to the contrary of something he is apparently well aware of: "“Recent research indicates that, in primates, whole brain size is a better measure of cognitive abilities than brain-to-body mass ratio. The total weight of the species is greater than the predicted sample only if the frontal lobe is adjusted for spacial relation.” "
Also you passingly mentioned a difference in grey to white matter without any elaboration whatsoever in a post I did not address.[/quote]
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I know this, that’s why I acknowledged it before you even hit the scene.
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Contradictory? In what way?[/quote]
It states brain-to-body mass ratio, neuroanatomical measures such as neocortical properties, etc are worse indicators of cognitive abilities than whole brain size . You said intelligence is better predicted using measures accounting for brain-to-body mass ratio like Encephalization quotient. The idea presented by the meta analysis (sketchy to begin with…) is mutually exclusive with your statement. Additionally you criticized my use of non-humans and then quoted a study on non-human primates.[/quote]
Ugh, look up a couple of inches. You see where I said that brain to body mass ratio is irrelevant because we’re only talking about one species? There you go. It’s good for determining intelligence levels across species, but not within, as shown by this primate study. Breath between the lines a little, bud.
I criticized your use of the sperm whale brain size as evidence of racial egalitarianism. This isn’t the same as using a study on primates as evidence that whole brain size is a better measure of intelligence within a species.