Skip to main content
note
This page was translated from the German original, partly by machine. Some passages may read awkwardly or contain inaccuracies. When in doubt, please read the original.

Cognitive Dissonance

In short

Contradictions between our beliefs and our behavior create uncomfortable tension that we are quick to want to resolve.

Yes, but that's something completely different!

Definition​

Cognitive dissonance describes the unpleasant state of inner tension that arises when people simultaneously hold contradictory thoughts, beliefs, values, or behaviors.

People are motivated to reduce this tension by changing their attitudes, seeking new information, or rationalizing the problematic behavior.

DE: Kognitive Dissonanz

Cognitive dissonance is closely connected to several other biases:

  • Confirmation bias: To avoid dissonance, people deliberately seek information that supports their existing beliefs.
  • Rationalization: Instead of changing behavior, "good reasons" for problematic behavior are invented after the fact.
  • Self-deception: Reality is perceived in a distorted way in order to avoid contradictions.
  • Sunk-cost fallacy: Time or money already invested justifies irrationally clinging to bad decisions.
  • Status quo bias: Changes are avoided because they could create dissonance between old and new beliefs.
  • Motivated reasoning: Logic is used so as to produce desired conclusions, not objective truths.

Examples​

The Smoker​

A smoker knows that smoking is harmful to health but keeps smoking anyway. He resolves this dissonance by telling himself: "My grandfather smoked too and lived to 90" or "Life is dangerous anyway, so one cigarette won't make a difference."

Instead of changing the behavior, the belief is adjusted.

The Environmental Activist with an SUV​

A person who campaigns for climate protection at the same time drives a gas-guzzling SUV. The dissonance is resolved by: "I need the SUV for work" or "My individual contribution is insignificant anyway; the corporations are the problem."

The Expensive Bad Decision​

After buying an expensive but poor product, dissonance arises between the investment and the disappointment. Instead of admitting the mistake, the product is talked up after the fact: "It does have weaknesses, but the build quality really is high."

The Stressed Workaholic​

Someone preaches work-life balance but works 70 hours a week. The dissonance is resolved by: "It's only temporary" or "Successful people just have to make sacrifices."

Effects​

  • Irrational justifications for contradictory behavior
  • Resistance to behavior change despite better insight
  • Self-deception and denial of reality
  • Reinforcement of harmful habits through after-the-fact rationalization
  • Escalation of bad decisions (sunk-cost effect)

Counter-Strategies​

  • Self-reflection: regularly look for contradictions between values and behavior.
  • Admit mistakes: accept that bad decisions are human, instead of justifying them.
  • External perspective: ask others for honest feedback to discover blind spots.
  • Small steps: adjust behavior gradually, instead of only changing beliefs.
  • Tolerate dissonance: learn that inner tensions are normal and do not have to be resolved immediately.

Sources​