Cognitive dissonance

In the field of psychology, cognitive dissonance is the mental discomfort (psychological stress) experienced by a person who holds two or more contradictory beliefs, ideas, or values. This discomfort is triggered by a situation in which a person's belief clashes with new evidence perceived by the person. When confronted with facts that contradict beliefs, ideals, and values, people will try to find a way to resolve the contradiction to reduce their discomfort. In the field of psychology, cognitive dissonance is the mental discomfort (psychological stress) experienced by a person who holds two or more contradictory beliefs, ideas, or values. This discomfort is triggered by a situation in which a person's belief clashes with new evidence perceived by the person. When confronted with facts that contradict beliefs, ideals, and values, people will try to find a way to resolve the contradiction to reduce their discomfort. In A Theory of Cognitive Dissonance (1957), Leon Festinger proposed that human beings strive for internal psychological consistency to function mentally in the real world. A person who experiences internal inconsistency tends to become psychologically uncomfortable and is motivated to reduce the cognitive dissonance, by making changes to justify the stressful behavior, either by adding new parts to the cognition causing the psychological dissonance or by avoiding circumstances and contradictory information likely to increase the magnitude of the cognitive dissonance. To function in the reality of a modern society, human beings continually adjust the correspondence of their mental attitudes and personal actions; such continual adjustments, between cognition and action, result in one of three relationships with reality: The reduction of the psychological stress of cognitive dissonance is a function of the magnitude of the dissonance caused by the existential inconsistency, between two contradictory beliefs held by the person; or by the contradiction between the person's beliefs and an action he or she has taken. Two factors determine the degree of psychological dissonance caused by two conflicting cognitions or by two conflicting actions: Cognitive dissonance theory proposes that people seek psychological consistency between their expectations of life and the existential reality of the world. To function by that expectation of existential consistency, people continually reduce their cognitive dissonance in order to align their cognitions (perceptions of the world) with their actions. The creation and establishment of psychological consistency allows the person afflicted with cognitive dissonance to lessen mental stress by actions that reduce the magnitude of the dissonance, realised either by changing with or by justifying against or by being indifferent to the existential contradiction that is inducing the mental stress. In practice, people reduce the magnitude of their cognitive dissonance in four ways: Three cognitive biases are components of dissonance theory. The bias that one does not have any biases, the bias that one is 'better, kinder, smarter, more moral and nicer than average' and confirmation bias. That a consistent psychology is required for functioning in the real world also was indicated in the results of The Psychology of Prejudice (2006), wherein people facilitate their functioning in the real world by employing human categories (i.e. sex and gender, age and race, etc.) with which they manage their social interactions with other people. The study Patterns of Cognitive Dissonance-reducing Beliefs Among Smokers: A Longitudinal Analysis from the International Tobacco Control (ITC) Four Country Survey (2012) indicated that smokers use justification beliefs to reduce their cognitive dissonance about smoking tobacco and the negative consequences of smoking it.