Does The Polygraph Testing Work with a Lie Detector?

Have you seen a crime television show? Such shows always present the suspect as sweaty and nervous while in the interrogation room. The detectives perform a polygraph test to look for the innocence of the suspect. 

You must have seen the polygraph on crime and thriller TV shows. Polygraph Testing is a way to determine whether a person is guilty. It is also called a “lie detector.” Now the question here arises: how accurate is the lie detector? 

Maybe, it is not the best nickname for the polygraph. Keefe private investigation has expert polygraph testers who will guide you about everything important related to any criminal activity!

How Does Polygraph Testing Work?

Polygraph examination OKC team has the ability to measure different physiological factors of a person. This includes the perspiration and pulse rate of the person being tested. The test determines the nervousness level of the person. There are high chances that the test is accurate. The person going through the polygraph test has to answer two types of control questions. 

By doing this, it will be possible to compare the subject’s physiological responses to those to the control questions and assess whether or not the subject is telling the truth when the test administrator asks more pertinent questions later.

What are the Outcomes?

However, not everyone remains nervous or excited when answering the questions. These have the tendency to control their emotions and reactions. At this moment, control questions fail to show how the person is reacting if lying. It becomes difficult for the tester administrator to decide the outcome of the polygraph test. 

Therefore, even though Polygraph testing may be good at assessing physiological markers linked to anxiety, it does not always mean it can always identify the difference between someone speaking the truth and someone lying. The polygraph examiner OKC will guide you on how to conduct these tests under safety considerations. 

Possible Chances to Manipulate the Test Records:

The polygraph test can be easily manipulated. That is why the test is not really reliable. Additionally, the polygraph measures physiological traits linked to lying and being nervous, which are frequent emotions when questioned. Because of this, police officers have stopped using polygraph exams. Overall, when analyzing the results of a polygraph test, it’s vital to consider the possibility of inaccuracy. But it is also feasible to catch someone in a lie.

Final Verdict:

Polygraph Testing is based on the fact that people experience a different emotional state when they are lying. The test can determine that state to know if someone is guilty or not. Specifically, in police interrogations, people become anxious because they fear getting caught. At such points, heart rate and blood pressure increase. There is also an increase in perspiration and respiration. 

A lie detector predicts these emotional and physical states. These alterations are a result of the fight-or-flight response that our bodies launch anytime we feel threatened. When faced with risk, whether a dangerous dog, a vengeful boss, or an impending exam, you’ve felt your heart race or your palms start to sweat!