Will I Fail a Polygraph If You Are Nervous?

According to a report from the National Academy of Sciences, “[a] variety of mental and physical factors, such as anxiety about being tested, can affect polygraph results – making the technique susceptible to error.” Unfortunately, once you have failed a government polygraph test, there may be little you can do to ...

Does being nervous affect a lie detector test?

The accuracy (i.e., validity) of polygraph testing has long been controversial. An underlying problem is theoretical: There is no evidence that any pattern of physiological reactions is unique to deception. An honest person may be nervous when answering truthfully and a dishonest person may be non-anxious.

Can you fail a polygraph when telling the truth?

According to Goodson, some people who are telling the truth can fail polygraph tests by trying too hard to control their body's responses. ... A 2011 meta-analysis by the American Polygraph Association found that polygraph tests using comparison questions had incorrect outcomes about 15% of the time.