What does the polygraph test check for?

Answer A polygraph test is meant to determine whether or not a person is being truthful. Sometimes called a lie detector test, the polygraph measures changes respiration, heart rate and sweat gland activi... Read More »

Top Q&A For: What does the polygraph test check for

What does a polygraph test measure?

Polygraph tests measure the body's physiological reactions to certain questions, according to the Skeptic's Dictionary. Theoretically, since people tend to get nervous when lying, you can tell if s... Read More »

Who invented the polygraph test?

The polygraph machine was developed in 1921 by psychiatrist Dr. John A. Larson. Larson's machine was the first to measure blood pressure, respiration and pulse. The same year, Dr. Leonard Keeler,... Read More »

Is a polygraph test admissible in court?

The United States Supreme Court has not ruled on the admissibility of polygraph test results and there is little consistency among courts on this issue. Court rulings have ranged from absolute bans... Read More »

Ways to Beat a Polygraph Test?

First invented in 1917, polygraph machines, or lie-detector tests, measure the involuntary responses of a subject's body to questions asked by an examiner. According to the Electronic Privacy Infor... Read More »