• The discomfort felt when holding two contradictory attitudes, beliefs, or behaviors.

  • Example: Doing something even though you know it’s wrong.

  • Dissonance Theory suggests people reduce their cognitive dissonance to achieve consistency. For example:

    • By changing the behavior
    • Justifying the behavior by changing the conflicting cognition
    • Justifying the behavior by adding new behavior
    • Ignore or deny information. Selective exposure theory also suggests this response.
  • Despite the dissonance, people may be unwilling to change their beliefs in light of new information because:

    • The change may be painful or involve loss.
    • The present behavior may be otherwise satisfying
    • Making the change may simply not be possible.
  • Normalcy Bias - people underestimate the likelihood of a disaster when it might adversely affect them. This is despite threat warnings.

  • Effort Justification - attributing the value of an outcome one puts effort into achieving as greater than the objective value of the outcome.

  • IKEA Effect - consumers place a high value on products they partially created.

    • It can be attributed to a psychological need to feel competent. Feeling like we’re incapable at something increases our desire to prove ourselves and appear competent.
    • Another reason is effect justification. When we put effort into something, we want to believe there was a good reason to do so.
    • Another reason is that we like things we associate with ourselves.
  • Ben-Franklin Effect - people like someone more after doing a favor for them. The rationalization is that they help others because they like them.