Testing Procedure
Polygraph measuring devices, including pneumographs, a sphygmomanometer, and electrodes, are placed on the subject either during the pretest interview or at its conclusion. After the end of the pretest interview, the sphygmomanometer is inflated, and the recording of responses begins.
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The exam is typically broken down into four phases: the initial interrogation and pre-test phase, the in-test (polygraph exam), and the post-test phase. Each ...
First, an examiner guides the subject through a pre-assessment. · Second, a series of questions is asked three times. · Third, the physiological data is recorded.
QUESTIONS, ANSWERED BY YES AND NO, INCLUDE CONTROL QUESTIONS; TRUTHFULNESS OR DECEPTION IS DECIDED BASED ON A COMPARISON OF RESPONSES TO CONTROL AND TEST ...
This process often involves a demonstration in which the examinee is asked to lie about an unimportant matter, and the examiner shows the instrument's ability ...
A polygraph examination begins with a present interview and study of the witness.