Re: IQ differences between racial groups
Posted: Wed Aug 15, 2018 7:36 pm
I was quite surprised to see this article. I would have assumed that IQ and race/ethnicity had no or smaller correlation. However I checked into it for a few hours yesterday after I saw this article and it appears that the correlation is real and not in scientific dispute.
I realized some of my points below have been touched on above already by others but just wanted to summarize my thoughts.
While there is some doubt and dispute about the relationship between IQ and intelligence, it seemed to me that there probably is a correlation between the two, and perhaps quite a strong one. There are results out there that have found/claimed correlations if you give people a test on a problem solving task that is entirely unrelated to the type of intelligence (logical reasoning, maths etc) tested on IQ tests. There is also the fact that IQ predicts things like career success, even avoidance of death and other things.
There is an argument that since the IQ test was designed by whites and then tested on blacks to demonstrate their inferior intelligence it may be biased in some way. It may test the type of "intelligence" prized by whites. I remember as kids my brothers and sisters used to design games. And the person designing the game tended to win it. However this argument does not really explain why people from Japan, China and other Asian countries are outscoring Europeans. Jews also beat other whites. Overall, this argument seems to be more of an emotional and hopeful one since we want it to be true that there are no real racial differences in IQ. But it doesn't seem to work.
It does seem that education, healthcare and nutrition possibly have an effect on IQ. And it does seem that blacks in American have worse education/health/nutrition that whites. Of course, sub-saharan Africans (who also score poorly on IQ tests according to some sources) also have worse education/health/nutrition. Given that IQ is hereditable, it's also possible that worse education, health and nutrition could start to exaggerate IQ differences across populations, compounding them over generations (I don't know enough about genetics to be able to say if this is a sound point or not for sure).
I think this is the most likely explanation for at least part of the difference. The Flynn effect also suggests that whites of 2 generations ago had about the same IQ as blacks now, and it's probably fair to say that blacks now, at least in Sub-saharan African and possibly in deprived areas of America, have about the same education and health and nutrition levels of whites 2 generations ago.
Related to the above arguments, there is also a relationship between class and IQ. Since blacks are on average in the lower classes in the US, and blacks in Africa have living standards that would put most of them in the lower class by Western standards, it can be argued that the reported average lower IQ of blacks is simply due to the average class that they are currently in. Since black skin I believe is just protection against sunburn and other effects of the sun, while white skin is needed to absorb vitamin D in other climates, it doesn't really make sense that skin colour specifically is related to IQ (although this argued may not work as decisively when we consider race to be more than colour; there are also differences in physical characteristics).
Why talk about it? It may very likely be counter productive to raise this issue at all, since it will lead to more racism and embolden white supremacists and so on, and make black people feel angry and damage race relations. However on the other hand there is a broad argument that the truth is almost always good, and secrecy is almost always bad, that I subscribe to, and we should not be shutting down the truth. There is a specific argument that's possible here also, that achieving racial equality may require equality of nutrition, education and health care from birth presumably funded by the government in addition to affirmative action policies. Affirmative action may not work as a stand alone policy if some races have lower IQ due to disadvantages of health and nutrition. That is not a conclusion I'm making so much as a possible valid debate that could be started.
I realized some of my points below have been touched on above already by others but just wanted to summarize my thoughts.
While there is some doubt and dispute about the relationship between IQ and intelligence, it seemed to me that there probably is a correlation between the two, and perhaps quite a strong one. There are results out there that have found/claimed correlations if you give people a test on a problem solving task that is entirely unrelated to the type of intelligence (logical reasoning, maths etc) tested on IQ tests. There is also the fact that IQ predicts things like career success, even avoidance of death and other things.
There is an argument that since the IQ test was designed by whites and then tested on blacks to demonstrate their inferior intelligence it may be biased in some way. It may test the type of "intelligence" prized by whites. I remember as kids my brothers and sisters used to design games. And the person designing the game tended to win it. However this argument does not really explain why people from Japan, China and other Asian countries are outscoring Europeans. Jews also beat other whites. Overall, this argument seems to be more of an emotional and hopeful one since we want it to be true that there are no real racial differences in IQ. But it doesn't seem to work.
It does seem that education, healthcare and nutrition possibly have an effect on IQ. And it does seem that blacks in American have worse education/health/nutrition that whites. Of course, sub-saharan Africans (who also score poorly on IQ tests according to some sources) also have worse education/health/nutrition. Given that IQ is hereditable, it's also possible that worse education, health and nutrition could start to exaggerate IQ differences across populations, compounding them over generations (I don't know enough about genetics to be able to say if this is a sound point or not for sure).
I think this is the most likely explanation for at least part of the difference. The Flynn effect also suggests that whites of 2 generations ago had about the same IQ as blacks now, and it's probably fair to say that blacks now, at least in Sub-saharan African and possibly in deprived areas of America, have about the same education and health and nutrition levels of whites 2 generations ago.
Related to the above arguments, there is also a relationship between class and IQ. Since blacks are on average in the lower classes in the US, and blacks in Africa have living standards that would put most of them in the lower class by Western standards, it can be argued that the reported average lower IQ of blacks is simply due to the average class that they are currently in. Since black skin I believe is just protection against sunburn and other effects of the sun, while white skin is needed to absorb vitamin D in other climates, it doesn't really make sense that skin colour specifically is related to IQ (although this argued may not work as decisively when we consider race to be more than colour; there are also differences in physical characteristics).
Why talk about it? It may very likely be counter productive to raise this issue at all, since it will lead to more racism and embolden white supremacists and so on, and make black people feel angry and damage race relations. However on the other hand there is a broad argument that the truth is almost always good, and secrecy is almost always bad, that I subscribe to, and we should not be shutting down the truth. There is a specific argument that's possible here also, that achieving racial equality may require equality of nutrition, education and health care from birth presumably funded by the government in addition to affirmative action policies. Affirmative action may not work as a stand alone policy if some races have lower IQ due to disadvantages of health and nutrition. That is not a conclusion I'm making so much as a possible valid debate that could be started.