Read this section, which discusses both formal and informal group dynamics. Pay particular attention to the foundational model of team and group development. There are a number of other models for team development available, but the Tuckman model is one of the most popular in today's business world. This section also introduces a more radical approach to understanding groups and teams that is known as punctuated equilibrium. This model of team-building is based on the idea that teams go through periods of stability and periods of rapid change. What happens during these alternating periods is what makes this approach to managing teams so unique.