"Conformity is a change in a person’s behavior as a result of real or imagined pressure from a person or group. There are two types of social pressures:
Informational influence is uncertainty about social reality.
Normative influence is based on uncertainty about ones social standing, the need of approval, and the fear of rejection."
Thought it would be interesting to share some of my Social Psychology notes. (The book is: Social Psychology, Myers, 10th ed)