Chris Argyris, another early pioneer of human process-based intervention strategies, postulation that the basic requirements of an intervention activity are valid information, free choice, and internal commitment. To facilitate change, a person involved should have useful information with which to diagnose a situation and then act on that information. Free choice implies that a person involved in a change process has the autonomy, control, and motivation to implement an intervention activity. Internal commitment implies that the person or persons involved in the change process have “ownership” of the strategy and, by implication, “have processed valid information and made an informed free choice. Argyris’s early work led to the development of several team-building techniques; including process consultation, role clarification, and confrontation meetings (Team building is discussed later in the chapter). The increasing use of work teams in organizations requires a significant shift in the manner in which organizations are managed, and OD principles can be used to facilitate this shift in culture, values, and control systems.