Hi there!
The principle of SOCIAL CONFORMITY.
It showed that people tend to engage behaviours more likely in confirmation of the society at large.
The interesting question is when everybody is thinking about confirming then who decide what behavior to engage in, from the start? That is if we are supposed to DRINK in a Social gathering when all are drinking. Then who thought that Drinking is to be done by all, or who sets the social norm and how is the degree of strictness understood and enforced?
is it something we just think and that the norms doesn't actually exist?
Some food for thought!
hope it make sense!