Kurt Lewin from a leader. Members are given choices and collectively decide the division of labor. Praise and criticism in such an environment are objective, fact minded and given by a group member without necessarily having participated extensively in the actual work. Laissez-faire environments give freedom to the group for policy determination without any participation from the leader. The leader remains uninvolved in work decisions unless asked, does not participate in the division of labor, and very infrequently gives praise. An early model of change developed by Lewin described change as a three-stage process. The first stage he called "unfreezing". It involved
Samuel A. Tannenbaum work of Sir Edward Maunde Thompson and his collaborators. Tannenbaum also was deeply involved on the question of the forgeries of John Payne Collier. He believed the entire account book of the Office of the Master of the Revels was a Collier forgery—a view that has found no other defenders, though several other scholars, such as Charlotte Stopes, argued that the Revels accounts book was a partial forgery. He was also convinced that Simon Forman's "Book of Plays" was a Collier forgery, a position that only a minority of commentators support. Samuel A. Tannenbaum Samuel Aaron Tannenbaum (1874–1948) was a