I am working a case now with a detective with every degree known and every CFE, PSI and a zillion of certifications after her name. Passed every test there is flying colors and she is dumb as a box of rocks.
How much less qualified would that dumb woman be if she couldn't pass those certification tests?
Women and men have different kinds of brains. A woman is more likely to do better preparing for an exam. But, a man is more likely to understand real-world mechanics. The result can be a women who passes the exams, but still doesn't seem too bright to you.
Your example with a female doesn't apply to Afros. Afros just have dumber brains. Without lowered standards (the common practice of Race Norming of scores) and test questions carefully biased to help Afros (also, a common practice), Afros are not going to pass exams.
Also, your argument is invalid because exam scores are only one of the factors used in granting jobs and promotions.
I favor a stand up and answer this question in person test.
"How would you react to this situation" is 95% of police work.
That does not involve any mulitple test question as there could be different answers to that question ALL correct.
There are couple big flaws with your idea of interviewing. One, it's highly open to bias. People the interviewer likes will usually get the better score. Even if there is no bias, the people losing out are going to think there is bias. And, those Afros are only going to pass an interview with bias. The interview is just a way to hide the deliberate discrimination.
Two, it's highly stupid. Your idea and my idea of the unspoken facts of a situation might be very different. This is especially bad if the interviewer is dumber than the one being interviewed. A multiple choice test greatly reduces the chance of the tester and the testee not being on the same wave-length.