Exploring A Polygraph

A polygraph what most people refer to as a lie detector. A polygraph does not necessarily detect lies. A polygraph detects bodily responses that accompany emotions and stress. Everyone one is different on their bodily responses, so there are wide range of possible bodily responses that should be looked at. I know some people can not stare someone in the face if they are lying to them. That person looks away when saying something. Someone else could wink every time they are telling a lie. I personally do not know what my bodily response is when telling a lie, but I would guess that I look away. The person who measures a polygraph is a polygrapher. They us sophisticated equipment to measure the telltale bodily or psychological reactions. The

The pre-test interview gathers biological information and consent from the examinee. The four separate phases are data collection, pretest interview, test administration, and post test interview. For the data collection stage, examiner gathers all of the relevant information concerning the area under investigation as well as known information about the subject. This phase is done to get the background information to inform the examiner. The examiner needs to understand what he or she is testing or supposed to look for. The next stage is the pretest interview where the examiner establishes some rapport with the subject and to explain some of the questions and procedures that will be used during the examination. This stage is where the examiner and examinee will discuss what is going to happen. The examiner will also describe the process of events to occur. The questions are discussed before, so there are no surprises to the examinee. The test administration is the actual process of the polygraph. The examiner convinces the examinee that the polygraph can easily tell lies, so the examinee is less tempted to lie. The examiner then asks the questions, and records the answers. After the examination, the examiner expresses the results with the examinee, and any other action that is required. The polygraph process has been expressed through several videos and movies. What most people do not know, is the different

The first technique is known as the relevant-irrelevant technique. Also, known as the (R-I) technique. The R-I technique uses both relevant and irrelevant questions. Deceptive and truthful people could show strong reactions to the questions. This was an issue because it hid any differences between truthful and dishonest people. The relevant-reverent procedure is similar to the relevant-irrelevant, but the R-R procedure deals with less irrelevant questions with more relevant questions. The R-I technique was the method of choice for examiners in pre-employment and employee screening situations. The control-of-questions test is the second test that is more commonly used today. THE CQT uses irrelevant questions, relevant questions, and control questions. THE CQT is the most preferred procedure by professional paleographers in the United States. If the physiological responses associated with relevant questions are higher than those for control, the examiners assume the person is guilty or untruthful. The issue with CQT is the difficulty involved in constructing control questions that will elicit stronger physiological responses in the innocent than relevant questions about the crime. Coming up with the control questions that has a meaning to it is the issue with the CQT test. The third and final test is the guilty-knowledge test. GKT test is also referred ti as the concealed information test. THE GKT test is publicly