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Excellent Jigsaw produced from one of the company's photos of Take That. Great present, delivered on time and very well packed. Highly recommend
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24th February 2010

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Lie detector test

Lie detector test. Pulse meters on a man'sfingers used for a lie detector, or polygraph, test. Under the subject's hands are the tracesproduced by the polygraph. A polygraph recordschanges in a number of physiological processes, asa series of questions are asked by an examiner. Aswell as measuring heart rate with these pulsemeters, blood pressure and respiration rate arealso measured. The examiner interprets the resultsto determine if the subject demonstrated deceptivebehaviour. The reliability of polygraphs iscontroversial and their evidence is not admissiblein court.. Stunning Photo Gifts From Science Photo Library