R-K Scale or Introversion-Extroverion Scale?

There are clearly some differences between the races, at least between Northeast Asians, European Caucasians and Blacks. Those differences are obvious to me and to many others, and show up in many statistics on a variety of societal variables.

Whether or not there are global personality differences between the races is very controversial, but it seems obvious to many folks just looking around at the world, and as a former US schoolteacher who taught classes full of Anglo-Americans, Japanese Americans and Afro-Americans for years all over Los Angeles, after a while you have to really lie to yourself to believe that such a thing does not exist.

At Gardena High School, there were many Blacks and many Japanese-Americans, and the contrast simply belts you in the face with a knockout punch. Even those experts who agree that there are differences go on and on about whether they are genetic or cultural, when it's clear that they are both.

Some recent studies have come out (by Jewish psychologists, of course) claiming that there are no significant personality differences between Blacks and Whites. I don't even care to read such a study, as it flies in the face of common sense observation.

Philippe Rushton is a racist who dislikes Blacks and his books are very controversial. He has suggested r-strategy versus k-strategy for the differences between Blacks, Whites and Asians. R-k selection theory is a theory in biology relating different modes of adaptation that animals use to survive in the environment.

I'm going to stay agnostic on the r/k thing and I don't wish to align myself with the oily Mr. Rushton, who, by the way, wishes to do away with all civil rights and anti-discrimination laws, but one thing I think Rushton makes clear is that there is an extroversion-introversion scale that closely mirrors that r/k scale.

As introverts have a vastly lower crime rate and extroverts tend to make up the vast majority of criminals (even among Whites) that makes good sense to me.

Also, extroverts are much more likely to be bored with school, tend to use and manipulate others more, have a "strong prey on the weak and that's ok" mindset, are vastly less moral and mannered, less inclined to repay debts, have much more regard for self than others, are more promiscuous, gamble, drink and take drugs more, take worse care of their health, are less cautious, have more accidents, take way more risks, are much more aggressive, impulsive prone to wild and excessive mood swings (wild emotionality) and are financially irresponsible and have a lowered life expectancy.

It's clear to me that all of these are true even within a race, say, with Whites (that's the race I'm most familiar with).

It's obvious to me that Blacks are the most extroverted race, NE Asians the least, and Whites in between.

Honestly, I have no idea what to do with most of the other races. SE Asians psychologically resemble NE Asians, though I think they are somewhat more extroverted. I haven't the faintest idea what to do with Amerindians, Hispanics, Polynesians, Micronesians and Papuans. I suspect that Papuans and Aborigines may be more like Blacks in extroversion.

Polynesians are very odd. They're obviously part-Asian and can be pretty quiet and introverted, yet at the same time, they are collectivist, love parties and are surrounded by people all the time. Filipinos are much the same. East Indians, Arabs, North Africans and South Asians are pretty much like Whites, cultural baggage aside.

Culture seems to intervene a lot here, as with everything else, and it gets real hard to disentangle everything. Sure, there are introverted Blacks (I've known a few of them!) and there are extroverted NE Asians, but we are looking at these groups globally here.