Compliance is a short-term change in behavior to try to fit into the environment. For example, fans wear their favorite team's colors in a sport to show support and fit in with the crowd. Obedience is when an individual follows the orders of someone in a position of authority. For example, a basketball coach might instruct their players to run a certain play, and they are expected to follow those instructions. Social facilitation is when individuals perform better in the presence of others. For example, a basketball player makes more free throws when the court is full. Group polarization is the tendency for groups to make decisions that are more extreme. For example, a team may have a group discussion to share their opinions on a play. Reciprocity norm is when people act in kindness. For example, an athlete may sign a shoe of a fan because they support him.