This model is best known as "Forming, Storming, Norming, Performing and Adjourning".  Most Project Managers have heard of this approach for converting a group of individuals working on a project into a "High Performance Team". Tuckman Model has been around for years and has proven to provide a catalyst in creating and maintaining a productive team.  The model considers behaviors of individual and groups as the project evolves.  Consideration of the guidance provided in this model has proven to lead to productivity increases of up to 50%.  The Project Manager that learns to capitalize on the benefits of the Tuckman Model will be glad they invested the time.