Submitted by Sees on
Leon Festinger first presented his theory of Cognitive Dissonance in his book titled, "A Theory Of Cognitive Dissonance" published in 1957.
In the field of psychology, cognitive dissonance is the perception of contradictory information. Relevant items of information include a person's actions, feelings, ideas, beliefs, and values, and things in the environment. Cognitive dissonance is typically experienced as psychological stress when they participate in an action that goes against one or more of them.
According to Festinger's theory, when two actions or ideas are not psychologically consistent with each other, people do all in their power to change them until they become consistent. The discomfort is triggered by the person's belief clashing with new information perceived, wherein they try to find a way to resolve the contradiction to reduce their discomfort.