This is a very interesting article essentially about the power of community, and how cultural signals influence the way we act, think and evolve. It is definitely not a piece that you browse through quickly, but it is worth a read!
“If placebo medicine can induce people to release hidden healing resources, are there other ways in which the cultural environment can “give permission” to people to come out of their shells and to do things they wouldn’t have done in the past? Can cultural signals encourage people to reveal sides of their personality or faculties that they wouldn’t have dared to reveal in the past? Or for that matter can culture block them? There’s good reason to think this is in fact our history.”
Check it out here: The Evolved Self-Management System by Nicholas Humphrey