Proposes a typology promoting a conceptual model that addresses the increased demand for use of group processes, continued effectiveness of leadership training programs, research issues regarding basic group dynamics, and generic models designed for the increased understanding of the myriad of group forms across the group spectrum. (Author)

Discusses some current attempts to redefine the concept of group cohesion, and examines studies designed to manipulate factors hypothesized to enhance cohesion. Concludes with suggestions for more systematic and potentially fruitful research. (Author)