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Repetition can make a claim familiar without making it true

Hearing a claim again can make it feel familiar without adding evidence that it is true. Experiments on the illusory truth effect test whether repetition raises truth ratings, including when people have relevant knowledge. Explore how researchers separate familiarity, knowledge, and judgments of accuracy.

3–5 min

Questions you could explore

  • How would you separate familiarity with a claim from evidence that it is correct?
  • How could a study test repeated statements while accounting for a person's existing knowledge?

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