Milieu control is a term popularized by psychiatrist Robert Jay Lifton to describe tactics that control environment and human communication through the use of social pressure and group language; such tactics may include dogma, protocols, innuendo, slang, and pronunciation, which enables group members to identify other members, or to promote cognitive changes in individuals. Lifton originally used "milieu control" to describe brainwashing and mind control, but the term has since been applied to other contexts.
Milieu control involves the control of communication within a group environment, that also may (or may not) result in a significant degree of isolation from surrounding society. When non-group members, or outsiders, are considered or potentially labeled as less valuable without basis for stated group-supported and group-reinforced prejudice, group members may have a tendency to then consider themselves as intellectually superior, which can limit alternate points of view, thus becoming a self-fulfilling prophecy in which group members automatically begin to devalue others and the intellect of others that are separate from their group, without logical rationale for doing so. Additionally, Milieu control "includes other techniques to restrict members' contact with the outside world and to be able to make critical, rational, judgments about information." 
- A Bandura. 1982. The psychology of chance encounters and life paths. American Psychologist, Vol. 37 No. 7, July 1982
- Dr. Lifton, Robert J.Thought Reform: Milieu Control. Retrieved on August 24, 2008. www.ferozegolwalla.com.
- Robert Jay Lifton's eight criteria of thought reform as applied to the Executive Success Programs
- Attacks on Peripheral versus Central Elements of Self and the Impact of Thought Reforming Technique
- Cognitive Impairment in Thought Reform Environments
- International Cultic Studies Association
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