An expectation that encourages people to behave in a certain way is a social norm. Social norms act as a guide for how people should interact and behave in a certain situation, and they are often learned through observation. Examples of social norms include saying "please" and "thank you," taking turns in conversation, and refraining from disruptive behavior in public. Adhering to social norms is important in all aspects of life, as it allows us to interact with others in a respectful and civil manner.