Skip to content

Webster’s Dictionary is correct that the polygraph is…

“Webster’s Dictionary is correct that the polygraph is sometimes called the lie detector, but that is misleading. The polygraph doesn’t detect lies per se. It would be a lot simpler if there were some direct sign unique to lying that is never a sign of anything else.” quote by Paul Ekman
Download Open image
““Webster’s Dictionary is correct that the polygraph is sometimes called the lie detector, but that is misleading. The polygraph doesn’t detect lies per se. It would be a lot simpler if there were some direct sign unique to lying that is never a sign of anything else.””

Paul Ekman

About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

The polygraph is misnamed; it measures physiological responses, not lies directly, and lacks a unique lie indicator.

In simple terms: Polygraph doesn't truly detect lies.

Key Takeaway

Rely on broader evidence for truth.

Themes

deception psychology technology truth

Mood

analytical skeptical

Type

scientific critical

When to use this quote

  • interrogations
  • courtrooms
  • security screenings
  • research studies

Key Concepts

lie detection physiological measurement

Questions to Reflect On

  • What alternatives improve lie detection?
  • How can we mitigate false positives?
A Different Perspective

Polygraphs can be influenced by anxiety unrelated to lying.

★ ★ ★ ★ ★ No ratings yet

More by Paul Ekman

Explore all 57 Paul Ekman quotes

More Lie detector quotes

Browse all 38 Lie detector quotes