Quote from spect8or:
Blacks fail at education because of lower IQs and greater impulsivity (the latter likely a result of elevated testosterone levels).
Black "family background" is a result of black promiscuity and feckless procreation, itself the result of black sex drive, impulsivity and short-term thinking, all of it rewarded, thus reinforced, thus perpetuated by generous but misguided welfare programs.
What is your scientific evidence for your "links".
Impulsivity? Defined as what? Measured by what?
What is the proven scientific link between testorerone levels and what you refer to as "impulsivity"? I assume then that women have significantly less impulsivity then men, since they tend to have significantly lower rates of testerone than men.
Your notion that blacks (defined how, again?) "fail at education" is easily refuted by the fact that scores on IQ tests have risen, that graduation rates of blacks have skyrocketed in the last several decades. Indeed, test scores and graduation rates should not increase at all if blacks are genetically predetermined to "fail at education."