/sci/ - Science & Math

>>9802658

Hey, /pol/tard representative here.

Brain size is correlated with intelligence at about .4 on a regression line. Now, due to different parts of the brain requiring various propositions of volume for their functions, and the fact that the races differ in terms of the selective pressures for different parts of the brain, this means that the correlation between brain size and intelligence is not equal between the races, but it is a good metric, all else being equal.

http://www.cogprints.org/1369/3/IQTAN2.pdf

However, brain size is a weak argument all round, and is a relatively weak estimation of intelligence. What is a better argument, however, is comparing White and Black performance on g-loaded subtests of IQ.

G-loaded means general intelligence loaded. General intelligence is the broad intelligence which governs all actions to an extent, from tying your shoes to solving long division, and the more of your brain a problem tests, the more g-loaded it is. Similarly, the more environmentally effected a problem is, like tying your shoes or driving a car, where virtually everyone can accomplish these tasks, the less g-loaded they are, because they are a poor predictor for general aptitude in intelligence.

Therefore, if when a test was completely g-loaded Blacks scored the same as Whites, and on a completely non g-loaded test they scored twice the 15-point IQ gap, we could say that the Black-White 15 point IQ gap is completely a product of environement and not of genes. HOWEVER, this is not the case, and the lower relative Black performance in less g-loaded subtests of IQ tests implies that the Black-White IQ gap is about 75% to 80% a product of genes.

This is to say, if Blacks and Whites were raised in a compound with White living standards, they would have a ~13 point IQ gap.

https://www.youtube.com/watch?v=w3y2SDpIEhE&t=17s

>inb4 >>>/pol/