Keith Sawyer views the spontaneous collaboration of group creativity and improvisation actions as "group flow," which organizations can use to function at optimum levels. Sawyer establishes ideal conditions for group flow: group goals, close listening, complete concentration, being in control, blending egos, equal participation, knowing team mates, good communication, and being progress-oriented. Collaboration is an essential ingredient of group flow and is vital to the Montessori classroom. The author has included a notes section with bibliographic information. [Reprinted with permission from chapter 3 of "Group Genius: The Creative Power of Collaboration." New York: Basic Books. Copyright 2007 by Keith Sawyer.]