The Group is a collection of more than two people who have come together to perform functions and to pursue goals. We see groups everywhere in society. We all live and work in groups. A closer examination of how groups work in social settings, sport, crises, work and therapy, for example, will show that group dynamics involve at least two levels. We have the overt work of the Group and the underlying processes that determine the group life and its functions. Models of group dynamics have been developed through research into many different group experiences by Freud, Lewin, Tuckman and others. For an understanding of the basic processes of the Group, Bion’s theory is of particular value.