Can someone recommend me a book about hidden/surprising/little known concepts about social interactions (not just dating and relationships) that are supported by data and don't come off as "conspiracy theories", so to speak?

I have already read books such as Dataclysm, Rational Male, Book of Pook, The Laws of Human Nature, most of Donovan's books as well as the material in the sidebar so I'm looking for something that covers similar subjects. Most of them offered valuable insight, others less so.

Thanks in advance for your suggestions.