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Polygraph Exams
Polygraph testing provides a scientific measure of truthfulness. An experienced investigator knows to ask the right questions to uncover the truth.
At Investigator New York we have successfully used polygraph testing to reveal spousal infidelity, confirm employee theft, expose fraudulent
We can issue a polygraph test at your private location you can come to our convinient NYC office.
Polygraph, Lie Detector, Psychophysiological Detection of Deception.
A polygraph, also known as a lie detector, and psychophysiological detection of deception (PDD) examination, is an instrument that measures and records several physiological functions, such as, blood pressure, pulse, respiration, and skin conductivity. The subject is asked and answers a series of questions, in the belief that deceptive answers will produce psychophysiological responses that can be differentiated from those associated with non-deceptive answers.
The polygraph examination begins with a pre-test interview to elicit information which will later be used to formulate “control questions, relevant questions, and irrelevant questions.” This initial interview is where the examiner must be extremely sensitive to the examinee’s background, culture and education, so as to understand the logical reasoning of the subject.
The examiner will explain how the polygraph instrument works, shows the examinee actual polygraph chart tracings, identifies psychophysiological responses on the chart tracings, and emphasizes the importance of answering the questions truthfully. When the examinee fully understands the procedure, and all of his, or, her questions are answered by the examiner, the question formulation begins.
With the full understanding of the questions to be used and the agreement by both the examinee and examiner to use the relevant questions, the examination begins. Upon completion of the test, the chart tracings are marked and scored, shown to the examinee with a full explanation of the results. A report containing the results with the examiner’s opinion is then given to the examinee.