Diversity in Five-Factor Personality, and Five-Factor Morality

A response to Econlog Arnold Kling posting on the Five-Factor Personality Model:

I found _Personality in Adulthood, Second Edition: A Five-Factor Theory Perspective_ by McCrae and Costa to be quite readable.

I feel pretty confident that each and every human society is "tuned" for specific ratios of the five factors, and, moreover, different tuned ratios for the "vital few"/"in-group" and the "out-group". And considering Jonathan Haidt's five fundamental moral values (liberals valuing care and fairness higher than loyalty, respect, and purity, in contrast to conservatives, etc.) - I feel there is a specific ratio, in each human society, for the ranking of the five fundamental moral values, again with different ratios for the "in-group" and "out-group". In all cases, more diversity is tolerated in the "out-group", as the "in-group" have to maintain a rough consensus at all times.

A lot of "energy" is exerted maintaining genotype and social diversity in the machinery of mating pair of humans, and in the machinery of larger various human groups. It would be peculiar if this diversity was not beneficial. I think, even more than diversity, a specific tuned ratio gives the maximum benefit over a set for historical conditions, and a history of conditions changing.

I think to any company's employees: any extreme of one of the five personality factors or any extreme of one of five fundamental moral values could quickly lead to a failure mode that could put the future of the company at risk, if expressed in even a single employee handling a critical task, without any meaningful oversight. It doesn't take much imagination to make a "just-so" story for a colossal failure from an extreme in any of the ten (especially if you are trying to run a profitable business, not a kumbaya therapy group, or a frat house, or a mating pair hothouse). So a diversity would keep the whole enterprise on an even keel, to my thinking.

And the sickest organizations are the ones where politics only allows one exact personality and morality type to exist in the higher ups.

(Aside: I am interested in the mechanisms and usages of human diversity, but not aware of any book title specifically on this subject)