Post by Tamrin on Jul 5, 2008 11:21:35 GMT 10
In psychology, cognitive dissonance is an uncomfortable feeling or stress caused by holding two contradictory ideas simultaneously. The theory of cognitive dissonance proposes that people have a fundamental cognitive drive to reduce this dissonance by modifying an existing belief, or rejecting one of the contradictory ideas.
Often one of the ideas is a fundamental element of ego, like "I am a good person" or "I made the right decision". This can result in rationalization when a person is presented with evidence of a bad choice, or in other cases. Prevention of cognitive dissonance may also contribute to confirmation bias or denial of discomforting evidence. If not corrected, this can lead to further bad choices for the sake of consistency, rather than learning from mistakes.
Experiments have attempted to quantify this cognitive drive. Studies have not so far detected any gender or cross-cultural differences.
Social psychologist Leon Festinger first proposed the theory in 1957 after the publication of his book When Prophecy Fails, observing the counterintuitive belief persistence of members of a UFO doomsday cult and their increased proselytization after the leader's prophecy failed. The failed message of Earth's destruction, purportedly sent by aliens to a woman in 1956, became a disconfirmed expectancy that increased dissonance between cognitions, thereby causing most members of the impromptu cult to lessen the dissonance by accepting a new prophecy: that the aliens had instead spared the planet for their sake.
Often one of the ideas is a fundamental element of ego, like "I am a good person" or "I made the right decision". This can result in rationalization when a person is presented with evidence of a bad choice, or in other cases. Prevention of cognitive dissonance may also contribute to confirmation bias or denial of discomforting evidence. If not corrected, this can lead to further bad choices for the sake of consistency, rather than learning from mistakes.
Experiments have attempted to quantify this cognitive drive. Studies have not so far detected any gender or cross-cultural differences.
Social psychologist Leon Festinger first proposed the theory in 1957 after the publication of his book When Prophecy Fails, observing the counterintuitive belief persistence of members of a UFO doomsday cult and their increased proselytization after the leader's prophecy failed. The failed message of Earth's destruction, purportedly sent by aliens to a woman in 1956, became a disconfirmed expectancy that increased dissonance between cognitions, thereby causing most members of the impromptu cult to lessen the dissonance by accepting a new prophecy: that the aliens had instead spared the planet for their sake.