What OJ just said.
NO reputable academic or any professional involved in the social sciences currently accepts the "science" you have provided to this thread.
NO social worker, sociologist, lawyer, judge, teacher, professor, criminologist that I have EVER spoken with since entering university 40 years ago has hinted at / mentioned / brought up / winked at the idea that race or regional origin is a factor in IQ or behaviour. That's 1,000's of people, many of whom were not really politically correct when stating what they feel.
The "science" that you have are the tests and theories that provided an underpinning for Nazism and Hitler. Back then, scientific ideas were totally different than they are now. There was a crazy Italian dude who thought that criminals had oddly shaped skulls, for instance. He used to go to jails and measure heads and then map the shape on a graph back at his office.