Group behavior refers to how individuals act and interact when they are part of a larger collective, such as a team, community, or social group. This behavior can be influenced by various factors, including social norms, group dynamics, and the presence of leaders. People often conform to the expectations of the group, which can lead to changes in attitudes and actions. Understanding group behavior is important in fields like psychology and sociology, as it helps explain phenomena such as peer pressure, groupthink, and social facilitation. These concepts illustrate how individuals may prioritize group cohesion over personal beliefs or how they may perform differently in a group setting compared to when they are alone.