Why children are actually expert liars from the age of two

Can you really tell if a kid is lying? | Kang Lee · 13:37 · Video: TED · Watch at the source

In short: Most people assume children are incapable of deception, but developmental research suggests otherwise. This talk explores the physiological reality of childhood lying and why these early falsehoods are actually a milestone of development.

Developmental researcher Kang Lee examines the physiological changes that occur when children lie. Contrary to the myth that they are poor liars, children begin practicing deception as young as two years old and can be remarkably proficient at it.

Lee argues that we should view the onset of lying as a positive developmental milestone rather than a moral failing. The talk also introduces new lie-detection technology designed to reveal hidden emotions, potentially changing how we interpret internal states.

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