/sci/ - Science & Math

>>9987713
No. Impulsivity (therefore all extreme manifestations of hostility) is essentially due to high levels of cortisol during childhood retarding the prefrontal cortex's development. It's an adaptive strategy to deal with stress. A xenophobic tribe in an insecure, competitive environment survives better than a liberal individualist that "doesn't see color." This applies to all human beings, but "African" people in America often have a shitty start due to the obliteration of the black nuclear family and a toxic culture surrounding them from birth. Among other things.
>inb4 genetics
Environment largely modulates the expression of genetics, and there's no "tribal gene" or "aggression gene". Raw IQ score, sure. Low IQ score doesn't equal aggressive or tribal.