A Polygraph Test

Polygraphic examination can record important physiological changes indicative of human breathing rate, pulse rate, blood pressure, sweat, and other person's lies, but since reliable evidence that a person is lying can not be obtained, It can not be used as evidence in court. A stressful body response polygraph is a machine that attempts to detect whether a person is lying or not ("lying down", pages 31, 2). Over the centuries various people and culture have sought ways to see if someone is lying.

Nielsen wrote it in a review called "scientific evidence of a lie detector test" and announced it to a journal "liars" of a lie detector. Instead, Nielsen wrote that the polygraph measures how people respond and react to the problem, and how resilient people react to them. Mr. Nielsen said the process of analyzing the results is complicated. The examiner will compare the answers to the related questions with the control problems they expect. Nielsen said that it is a similar idea to test students at the beginning of the school year and end the progress. Based on these comparisons, the examiner uses statistical analysis to determine the likelihood that the candidate is lying.

This is a theater produced by the producer of the CBS TV news program "60 minutes" investigating the use of controversial tests to confirm the effectiveness of the polygraph test by private employers. In the test, CBS randomly selected four lie detectors from the phone book and asked each lie detector to check the suspects of the four employees. This magazine initially contacted the magazine manager, told that over 500 dollars of camera equipment was stolen and almost certainly stolen by insiders. Polygraphers do not know that other examiners were involved, they took an exam at a public photography office.

The most common type of polygraph test includes the test of the previous test, but there are some questions "yes" or "no", but if the candidate is attached to the polygraph, the question is It is done. After evaluating the chart. The whole process usually takes 1 to 3 hours. It is not always recognized that a polygraph check has two important outputs. Usually, the test results themselves have advantages. It is not to specify fraud or uncertainty (or derivatives of these terms) but to indicate fraud. Equally important in the clinical setting is the information that is disclosed during the examination. The reason is not obvious, but as it deserves further research, it seems that the polygraph will help clarify during the test.