The behavior of those we're with can be contagious as John Bargh and his colleagues observed in a group of experiments. A volunteer who is asked to comment on a some pictures soon begins to mimic the mannerisms of the person she is working with with...
Membership in a group is of great significance to most people. One of the first things groups do is develop a socially shared definition of who they are, what their purpose is, what their vocabulary is and their social structure. It's natural for pe...