WONDER #678: Can You Fool a Lie Detector?

Question 1 of 3

This Wonder was mostly about...

  1. how to build your own lie detector test.
  2. why honesty can be difficult sometimes.
  3. the inventor of the polygraph machine.
  4. how polygraph machines work and strategies people have used to fool them.

Question 2 of 3

Which of these is NOT measured by a polygraph machine, according to this Wonder?

  1. Body temperature
  2. Heart rate
  3. Blood pressure
  4. Skin conductivity

Question 3 of 3

During a polygraph test, the examiner asks __________ questions to set a baseline reading.

  1. key
  2. control
  3. open-ended
  4. complicated

Check your answers online at https://wonderopolis.org/index.php/wonder/Can-You-Fool-a-Lie-Detector.