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UPDATE Why Do We Change Our Minds?

Understand how evidence, discomfort, persuasion, memory, and testing shape belief revision.

5
lessons
~20 min
to learn
🔬 Science
subject
Adults
level
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What you’ll learn

  1. A Mind Is Built to UpdateExplain why beliefs need both stability and flexibility, and identify evidence and source factors that support revision.Beliefs are working models. Good updating responds to relevant, credible evidence without demanding constant change.
  2. Discomfort Can Move BeliefsDescribe cognitive dissonance and effort justification as routes that can change behavior, belief, or rationalization.Inconsistency and costly commitment can motivate revision, but discomfort can also protect an existing self-story.
  3. Persuasion Has RoutesDistinguish careful evidence processing from shortcut-based persuasion and explain how social conditions affect revision.Motivation, ability, identity, and autonomy shape whether a message is examined deeply or accepted through cues.
  4. Corrections Compete with MemoryExplain why corrections can reduce misinformation without producing complete or permanent belief change.Memory stability, repetition, source confusion, and replacement explanations make revision graded and time-sensitive.
  5. Good Updating Needs a TestApply a calibrated belief-updating process using alternatives, discriminating evidence, confidence, and future update triggers.Open-minded reasoning is responsive but not indiscriminate: it scales belief change to the quality of evidence.

Questions this course answers

What does cognitive dissonance describe?

Dissonance is tension caused by inconsistency. It can motivate behavior change, belief change, or rationalization, so it does not guarantee an accurate update.

When is careful evidence processing more likely during persuasion?

Motivation and ability make deeper processing more likely. Shortcuts can still influence attitudes when attention, time, or knowledge is limited.

Why can a person agree with a correction and later use the original misinformation?

A correction can reduce a false belief without completely erasing the original trace. A coherent replacement and later retrieval opportunities can help.

Put this belief-updating sequence in order.

A standard for revision is easier to use when the claim, alternatives, discriminating evidence, update, and future trigger are explicit.

Which statement best describes open-mindedness?

Open-mindedness combines receptivity with calibration. Evidence can move a judgment by different amounts depending on its quality and alternatives.

Grounded in trusted sources

  • OpenStax, Psychology 2e, 12.3 Attitudes and Persuasion - https://openstax.org/books/psychology-2e/pages/12-3-attitudes-and-persuasion
  • Ecker et al., Misinformation and the Sins of Memory: False-Belief Formation and Limits on Belief Revision - https://pmc.ncbi.nlm.nih.gov/articles/PMC10284569/
  • Kowalski and Taylor, Memory failure predicts belief regression after the correction of misinformation - https://pmc.ncbi.nlm.nih.gov/articles/PMC10710738/
  • Chan et al., A meta-analysis of correction effects in science-relevant misinformation - https://pmc.ncbi.nlm.nih.gov/articles/PMC12397989/
  • Kunda, The case for motivated reasoning - https://doi.org/10.1037/0033-295X.108.3.480
  • Festinger, A theory of cognitive dissonance - https://doi.org/10.1037/10318-000

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