Social norms are contagious because they are learned and enforced through socialization processes. When individuals observe others conforming to certain behaviors, attitudes, and beliefs, they are more likely to adopt and adopt similar behaviors themselves. This is known as social proof or social influence. Humans have a natural tendency to conform to group norms in order to fit in, gain acceptance, and maintain social cohesion. When people see others behaving in a certain way, their perception of this behavior as normal and acceptable increases, which in turn influences their own behavior and actions.
