The Scientific American article you linked was quite interesting. The researchers' findings are consistent with some of my speculative claims. The findings support the proposition that humans are predisposed, as a result of evolutionary forces, to interact and that structured societies emerge from the interaction.

The research findings are consistent with the concept of a collective unconscious.

https://en.wikipedia.org/wiki/Collective_unconscious

Years ago, I commented to a friend who had once been a psychology professor at an ivy league university that human intelligence is primarily social intelligence. He agreed with that statement. The research findings seem to substantiate that proposition. Furthermore, they suggest that personal identity is substantially social identity. Personal identity is perceived against one's social position.

Briefly, humans are a social species.

Additionally, the researchers identified brain structures and processes that produce both personal and social identities.

After reading the article, I found the principles cited were almost intuitive.

The research findings are consistent with my original claim: Nurture is nature. Learning to become a participating member of one's society and teaching others to do so is a natural process.

I appreciate your bringing that article to my attention.