But what drives 'class'?
What changes class?
IQ.
Then there's another issue of Genetics: Testosterone: to explain why Young blacks have much higher crime rates..
Black Males and Testosterone: Evolution and Perspectives | Beyond Highbrow – Robert Lindsay
...Young Black males have higher levels of active testosterone than European and Asian males. Asian levels are intermediate to Blacks and Whites, but Asians have lower levels of a chemical needed to convert testosterone to its active agent, so effectively they have lower levels. Androgen receptor sensitivity is highest in Black men, intermediate in Whites and lowest in Asians.
US Blacks have the highest rate of Prostate cancer on Earth, and the levels in African Blacks may be just as high.
Blacks do not retain high testosterone throughout life.
Blacks have much higher testosterone levels than Whites from age 7-24. After 24, the difference starts shrinking, and by the early 30′s, it is gone. In later years, White men have higher testosterone than Black men. This makes it very difficult if not impossible to explain differing behavioral variables, including higher rates of crime and aggression, in Black males over the age of 33 on the basis of elevated testosterone levels.
Higher testosterone levels are linked to violent behavior..."
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