Psychology of the Polygraph TestThe polygraph test, introduced almost a century ago, has been widely used to detect deception and for some time was considered by law enforcement agencies to be an exceptionally apparatus method valid test. Media and law enforcement representatives describe the various methods for detecting deception as extremely valid and reliable in detecting deceptive signals, although various research conducted through field studies and controlled experiments demonstrates significant error rates between various detection procedures. tests used. An individual's physiological responses may vary from person to person. No matter how small the error rate may be, there is always the possibility that environmental and physiological conditions induced by the individual or the interpreter may have an effect on the interpretive conclusion of what were considered deceptive signals. These influential factors may illustrate a small positive or negative error rate, but when the conclusion is applied to a conviction, it may possibly establish or distinguish false results as accurate or inconclusive. The implausibility of various methods of deception detection poses an immense threat to the innocent. When we apply these findings to a defendant on trial, these “false findings” can be extremely damaging to the case. False results may perhaps allow the guilty to be released and the innocent to be incarcerated. The only way we can apply these tests and use the results as evidence in court is to make the testing procedures 100% reliable. But, as research shows us, due to the numerous environmental, psychological, social and physiological factors that can compromise the validity of the results, the test results will remain obsolete in the eyes of the court. Use and interpretations of polygraph poses as the greatest threat to the test subject. Psychophysiologists generally agree that there is no specific response to lying. Essentially, no specific action has been identified and attributed as an unstoppable deceptive signal. This appears to be very contradictory to the overall purpose of the polygraph test. The fact that the polygraph is largely open to interpretation constitutes invalidity from the start. Although changes have been made to protect validity and minimize polygraph error, the results are still dependent on the subject's physiological response. While research has shown that these alterations do indeed minimize the inaccuracy of the results, no matter what changes you make, there is still a slim chance that you could knowingly break the barriers..