American educational philosopher Kenneth D. Benne and American professor of pedagogy Paul Sheats studied group roles and defined 26 different roles in their article 'Functional Roles of Group Members' published in 1940
Reviews and clarifies the group's position. Provides a summary of what has been accomplished, notes where the group has veered off course, and suggests how to get back on target
Evaluates proposals against a predetermined or objective standard. Assesses the reasonableness of a proposal and looks at whether it is fact-based and manageable as a solution
Regulates the flow of communication. Ensures all members have a chance to express themselves by encouraging shy members to contribute ideas. Limits those who dominate the conversation and may suggest group rules or standards
Benne and Sheats' theory can be used to improve group effectiveness and harmony by identifying roles, determining additional ones required, and eliminating unnecessary ones