Reading PeopleDevelopment

Why Kids Start Lying

A toddler's first lie is a sign their brain is growing up

A child says they didn’t peek, then names the hidden toy. What did those two answers actually show?

You'll find out

  • See how the toy study worked
  • Separate a peek from a denial
  • Get past the label to the facts

Why it matters

Read what a child did and what they said as separate clues so you can deal with the real problem.

About 3 min6 interactive slides · 5 questionsLesson 89 · Zone 10

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More in this zone

  1. 82Lie DetectionWe Catch Liars About Half the TimeMost people spot lies only slightly better than a coin flip
  2. 83Lie DetectionLiars Don't Always Look AwayLooking away is the most famous sign of lying, and one of the least reliable
  3. 84Truth-Default TheoryThe Truth DefaultWe're built to believe people, which is why liars usually get away with it
  4. 85InterviewingAsk Them to Tell It BackwardsLying is mentally hard; telling the story backwards makes it harder
  5. 86InterviewingToo Much Detail, or Too Little?True stories tend to be richer in details you could actually check
  6. 87Lie DetectionLie Detectors Don't Detect LiesThe polygraph measures nerves, not lies
  7. 88LyingEverybody Lies a LittleThe average person tells about one or two lies a day, mostly small
  8. 90InterviewingThe Unexpected QuestionLiars rehearse their answers; they don't rehearse the question you didn't ask