/lit/ - Literature

>>4304346
Because differences in material resources across a broad range of family circumstances seem to have no demonstrable effect on IQ by late adolescence, culture-only theories have now begun to stress psychological rather than material disadvantage as the root cause of group differences in cognitive performance: for example, racism-depressed motivation, racial stress, race-based performance anxiety ("stereotype threat"), and low self-esteem. All are generally posited to result in some manner from White racism. However, there is no evidence that any of them causes either short- or long-term declines in actual cognitive ability, either within or between races; not all of them (e.g., self-esteem) are lower for Blacks; and none can begin to explain the large array of relevant non-psychological facts, including why the races also differ in brain size and speed (in milliseconds) of performing exceedingly simple cognitive tasks such as recognizing which of several buttons on a console has been illuminated (a reaction time task). Because the American Black-White IQ gap has not narrowed in the century since it was first measured, the psychic injury must also be just as deleterious now as it was during that earlier, more hostile era for Blacks, which seems implausible. Thus, while the proposed psychic insults may temporarily patch over some rips in the culture-only theory, they would seem to hold even less promise than the failed socioeconomic ones for explaining the longstanding, worldwide pattern of racial IQ differences and their links to the biological correlates of g.

http://www.udel.edu/educ/gottfredson/reprints/hereditarianhypothesis.pdf

>>4289123
>although I'm pretty sure statistically speaking one race won't be way more intelligent than the other
The racial IQ gap between blacks and Whites is a full standard deviation. To give you an idea of what that means:

- 1 in 5 whites is more intelligent than every Negro on the planet
- Average Whites are more intelligent than 87% of Blacks
- In equally sized black and White populations, the blacks have one tenth the geniuses and ten times more retards.
- An average black adult has the mental abilities of a White 13 year old.

The differences caused are plain to see. Africans carry water for miles on their wooly heads because they can't figure out how to dig a well, while Whites land on the moon.

>>3460565
IQ/g usually predicts major life outcomes better than does any other single predictor in broad samples of individuals. For example, whether IQ predicts strongly (educational performance) or weakly (law-abidingness), it predicts better than does social class background.

>>2859093
Social Consequences of Group Differences in Cognitive Ability
>IQ/g usually predicts major life outcomes better than does any other single predictor in broad samples of individuals. For example, whether IQ predicts strongly (educational performance) or weakly (law-abidingness), it predicts better than does social class background.
http://www.udel.edu/educ/gottfredson/reprints/2004socialconsequences.pdf

Survey of opinions on the primacy of g and social consequences of ability testing: A comparison of expert and non-expert views
>Our results indicate that there is consensus among experts in the science of mental abilities that g is an important, non-trivial determinant (or at least predictor) of important real world outcomes for which there is no substitute, and that tests of g are valid and generally free from racial bias.
http://dx.doi.org/10.1016/j.intell.2008.03.007