Question: How accurate is a polygraph test 2020?

Despite claims of 90% validity by polygraph advocates, the National Research Council has found no evidence of effectiveness. The American Psychological Association states Most psychologists agree that there is little evidence that polygraph tests can accurately detect lies.

What is the accuracy rate of a polygraph test?

If the examiner is well-trained, if the test is properly carried out, and if theres proper quality controls, the accuracy is estimated between 80%-90%, he says, adding that this is higher than the average persons ability to tell if someone is lying.

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