Post by Admin on Oct 30, 2023 4:55:49 GMT
According to Scientists and Psychologists, Polygraph/Lie detector tests are completely useless. According to the Wikipedia article, and I quote:
"There are no specific physiological reactions associated with lying, making it difficult to identify factors that separate those who are lying from those who are telling the truth."
"Although there is some debate in the scientific community regarding the efficacy of polygraphs, assessments of polygraphy by scientific and government bodies generally suggest that polygraphs are inaccurate, may be defeated by countermeasures, and are an imperfect or invalid means of assessing truthfulness. Despite claims that polygraph tests are between 80% and 90% accurate by advocates, the National Research Council has found no evidence of effectiveness. In particular, studies have indicated that the relevant–irrelevant questioning technique is not ideal, as many innocent subjects exert a heightened physiological reaction to the crime-relevant questions. The American Psychological Association states "Most psychologists agree that there is little evidence that polygraph tests can accurately detect lies.""
"In the 1998 US Supreme Court case United States v. Scheffer, the majority stated that "There is simply no consensus that polygraph evidence is reliable. Unlike other expert witnesses who testify about factual matters outside the jurors' knowledge, such as the analysis of fingerprints, ballistics, or DNA found at a crime scene, a polygraph expert can supply the jury only with another opinion. The Supreme Court summarized their findings by stating that the use of polygraph was "little better than could be obtained by the toss of a coin. In 2005, the 11th Circuit Court of Appeals stated that "polygraphy did not enjoy general acceptance from the scientific community"."
So, there you have it. That's why polygraph tests are not admissible in court. A Polygraph/Lie detector test is no more accurate than flipping a coin and calling heads or tails.
~Michael Joseph Piziak, BS, MA
In the source article, & link, below, more evidence is shown where Lie Detector tests are simply ineffective - from William Iacono, Professor of Psychology and Neuroscience at the University of Minnesota,
The US Congress Office of Technology Assessment, & The National Academy of Sciences.
The US Congress Office of Technology Assessment, & The National Academy of Sciences.
Source: en.wikipedia.org/wiki/Polygraph