Many people that lie detectors aka polygraphs detect lies to tell if a person is making a true statement. The real question is.. Do they REALLY detect lies? Do they detect them truthfully? Were they used to make people think you can tell they’re lying. This information provided will tell you if they are really what everyone think they are.
Before knowing that polygraphs/ lie-detectors actually give truthful results, you have to know what they actually are. Polygraphs are lie-detecting tests that measures and records indices such as blood pressure, pulse, respiration, and skin conductivity while the person is answering questions that are asked. Polygraphs are machines that has many sensors and a heart rate cuff connected to the machine that are placed on your body. The sensors placed on your body and the heart rate cuff placed on your stomach will sense the way your body changes physically while you are answering questions that are asked. Sensors are also placed on the suspect’s fingertips. While being questioned a piece of paper will be determining your lies by a pen drawing on the paper your different rates from your body.
Lie detector tests are usually used in crime cases, banks, investigations, businesses, and many more. They are used for crime cases to see if the criminal actually committed the crime. They are used for banks because bank tellers are in the banks which carries an abundance of money. The bank tellers have to be trusted not to take the money from the bank. Investigators are tested because they have to be 100% honest investigating a case. Business people must take them because legally the government needs to know that it is a serious business also it the test has to been done legally because it can cost the bus...
... middle of paper ...
... Liars can pass lie detectors easily. One example is thinking excited thoughts. This can help them be less nervous while answering a question. They can also do mental arithmetic thoughts, altering one’s breathing pattern and biting the side of the tongue.They also say truthful people can try these techniques to pass the test. Hopefully these techniques work every time a truthful person who is nervous is taking the test.
To conclude this statement, the answer to the question “can lie detectors truthfully determine truthful statements,” is FALSE! Lie detectors can not determine truthful statements. They are fake tests and an average person can pass them with all lies. These tests are not allowed in court and nobody has to forced to take this test because they don’t always determine truthful and false statements. So if anyone thinks they always work, that is not true.
In “The Interview” by Douglas Starr, He talks about the different techniques they use when interrogating suspects to determine whether the suspect is lying. One technique they use is called the Reid Technique and that is when
One of the last types of ways investigators are coached to detect deception is in the behavioral attitudes of a person being interviewed such as being unconcerned or over anxious (Kassin, 2005). The success rate of looking for these cues are very successful in telling if an individual is being deceitful and has surpassed any laboratory tests conducted on the subject. The laboratory test however did reveal some interesting facts. The research showed that people who had training and experience did not score better than the control group who received no training. In fact all individuals scored at the chance level with the people who had training scored just above chance or at the chance level. To check if special training in the detection of deception was more accurate a study ...
Feature, Heather HatfieldWebMD. "10 Ways to Catch a Liar." WebMD. WebMD, n.d. Web. 06 Jan. 2014.
In Laurence Armand French Ph.D. and Thomas J. Young Ph.D.’s article The False Memory Syndrome: Clinical/Legal Issues for the Prosecution talks about memory recall being an unreliable form of evidence in the Criminal Justice System. French and Young state that hypnosis and lie detector tests are a misconception because “the cognitive interpretations of the emotional/autonomic aspects of the central nervous (CNS) and peripheral nervous systems are not true indicators of reality,” (p. 38).
Contributing to most cases of wrongful convictions is Eyewitness misidentification. Eyewitness misidentification not only is the greatest cause of wrongful conviction but it also single handedly creates a huge 75% of convictions to be overturned due to DNA testing. When dealing with eyewitness testimony there is no guarantee that the criminal to which the victim is describing can be narrowed down to a single person. That is where facial and body features such as height, weight, and other personal reference can help victims remember a clearer image. Thus, when the suspects are in the police lineup the victim will either see the criminal, or not. Sadly, the false testimony, or “snitch” testimony come to play. Yes, victims could be telling the truth to whether the criminal is actually in...
Further , it was also due to a small truth that would cover a big lie. An instance, is that a woman could say that a muffin looks pretty. These lies women tell could be risky ´, but they are used in order to not hurt the person who is receiving the lie. This was also noticed in Meyer's ted talk when she mentioned when there were two patterns of deceptions. The first one was an interview that was conducted with Bill clinton . The tell tales of his interview showed that he used a non contacted denial and a distanced language. The second deception is that liars are known to freeze their upper
Police often use deception as a form of discretion in law enforcement. Drug smuggling, pornography rings, and fences of stolen merchandise are investigated using undercover work or informants. Blue lies are used to control a
Heart rate, blood pressure, and skin conductivity are monitored during the lie detector test, those responses can be controlled. Steve Elias writes, “Some people are so divorced from morality or a guilty conscience that they may test honest – because they are really good
...t, “A variety of factors can contribute to a false confession during a police interrogation. Many cases have included a combination of several of these causes. They may include [but not limited to]: duress, coercion, diminished capacity, mental impairment, ignorance of the law, fear of violence, the actual infliction of harm, the threat of a harsh sentence, and even misunderstanding the situation” (Innocence Project). All of these factors have a huge effect during an interrogation. If one is ignorant to the law he may confess in order to end the uncomfortable nature of the situation. Unaware that he or she has now compromised themselves. As a result The Innocence Project has advocated recording interrogations as a means to protect the suspect and law enforcement personnel and perhaps forcing officers to act more ethically and resulting in less legality issues.
Employment and interpretations of the polygraph poses as the greatest threat to the testing subject. It is generally agreed upon psychophysiologist's that there is no specific lie response. Basically, no specific action has been identified and allocated as an irrepressible deceptive cue. This seems to be very contradicting to the whole purpose of the polygraph test. The fact that the polygraph is wide open to interpretation crates invalidity from the start.
III. Credibility: My brother-in-law had to take a polygraph test for his job. And he was forced to prepare for it a year in advance, ever since I saw his preparation for this one test; I have forever been fascinated by this invention
A polygraph test can record a person's breathing rate, pulse, blood pressure, perspiration and other significant physiological changes that suggest a person is lying, but it should not be used as evidence in a court of law because it does not provide reliable proof of a person's physical reaction to the stress of lying.
After reviewing the article “Inside Interrogation: The Lie, The Bluff, and False Confessions”, it became very evident the huge problem with interrogations and false confessions in the criminal justice system is with false confession. Jennifer T. Perillo and Saul M. Kassin crafted three distinct experiments to try and better understand false confessions and how trues the actual numbers in real life are. What Perillo and Kassin were trying to prove is that “the bluff technique should elicit confessions from perpetrators but not from innocents” (Perillo, Kassin 2010). What is called the “Bluff Technique” is an interrogation technique that uses a sort of threat or hint that there is certain proof that a person will think is more of a promise for
Lie detectors can be useful to determine whether or not on is telling the truth. However, polygraph test cannot be applicable to all crimes, as Raymond Hernandez discusses in his article about lie-detectors and alleged rape victims. The article is dated, however it provides a great reasoning of why not to use polygraph test on alleged rape victims.
A popular way on many crime dramas to determine if a suspect is lying or telling the truth is by hooking them up to a polygraph machine. In a matter of a minute the police are able to determine if the suspect is lying and guilty or, on the rare occasion, telling the truth and innocent. But, one has to wonder, is it really that simple? Polygraphs measure four main factors that are thought to change when a lie is told and more importantly, it is assumed that these changes indicate deception. The four main factors are blood pressure, heart beat, perspiration, and breathing and these are recorded by using simple devices. It is important to note from the beginning that those who question the reliability of polygraphs do not doubt the reliability of the measurements, but the ability of the measurements to indicate and/or prove deception. Even though doubt exists as to the reliability, polygraphs are used not only in law enforcement settings, but also in intelligence agencies, in the maintaining security of industry, and for public safety and service around the world. Despite its prevalence, there are many groups that call into question the effectiveness, reliability, and fairness of polygraph testing. This paper will explore this question by first looking into the history of polygraphs including court rulings and how polygraph tests are done, then current use, and finally looking at sources of bias and error in the test and the process.