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An early model of change developed by Lewin described change as a three-stage process. [15] The first stage he called "unfreezing". It involved overcoming inertia and dismantling the existing "mind set". It must be part of surviving. Defense mechanisms have to be bypassed. In the second stage the change occurs.
This equation was first presented in Lewin's book, Principles of Topological Psychology, published in 1936. [2] The equation was proposed as an attempt to unify the different branches of psychology (e.g. child psychology, animal psychology, psychopathology) with a flexible theory applicable to all distinct branches of psychology. [ 3 ]
Lewin, a social psychologist, believed the "field" to be a Gestalt psychological environment existing in an individual's (or in the collective group) mind at a certain point in time that can be mathematically described in a topological constellation of constructs. The "field" is very dynamic, changing with time and experience.
This model of change, developed by Lewin, was a simplistic view of the process to change. This original model "developed in the 1920s and fully articulated in Lewin's (1936a) book Principles of Topological Psychology" [8] paved the way for other change models to be developed in the future.
Figure 1: Systems Model of Action-Research Process. Lewin's description of the process of change involves three steps: [22] "Unfreezing": Faced with a dilemma or disconfirmation, the individual or group becomes aware of a need to change. "Changing": The situation is diagnosed and new models of behavior are explored and tested.
Lewin's description of the process of change involves three steps: [18] Figure 1 summarizes the steps and processes involved in planned change through action research. Action research is depicted as a cyclical process of change. The cycle begins with a series of planning actions initiated by the client and the change agent working together.
When Lewin moved to the USA, he had become more involved with real world issues and the need to understand and change human behavior. His desire and personal involvement with gestalt psychology led to the development of his field theory. [1] Lewin's field theory emphasized interpersonal conflict, individual personalities, and situational variables.
Change Management Tools—The Modern Leadership Model (Volume 34, Issue 2, March–April 2004, pp. 147–148) Change Management Tools—Ideal State Analysis (Volume 32, Issue 4, July–August 2002, pp. 84–85 Change Management Tools—Lewin's Change Model (Volume 31, Issue 4, July–August 2001, pp. 71–73)