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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.
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.
The action-research model shown in Figure 1 closely follows Lewin's repetitive cycle of planning, action, and measuring results. It also illustrates other aspects of Lewin's general model of change. As indicated in the diagram, the planning stage is a period of unfreezing, or problem awareness. [18]
It also illustrates other aspects of Lewin's general model of change. As indicated in the diagram, the planning stage is a period of unfreezing, or problem awareness. [22] The action stage is a period of change, that is, trying out new forms of behavior in an effort to understand and cope with the system's problems.
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)
Jessica Capshaw and Camilla Luddington talk about their new podcast and reflect on their time on Grey's Anatomy. (Corbis via Getty Images) (Stephane Cardinale - Corbis via Getty Images)
People developing their theory of change in a workshop. A theory of change (ToC) is an explicit theory of how and why it is thought that a social policy or program activities lead to outcomes and impacts. [1] ToCs are used in the design of programs and program evaluation, across a range of policy areas.