This paper involves fifty-one re-examinations of original polygraph tests that resulted in conflicted outcomes and examinations where deliberate distortions were believed to have been employed. The Polygraph Validation Test (PVT) was successfully employed in these re-examinations to rectify the original problems and/or confirm attempts by examinees at countermeasures or augmentations.
Lately there had been a huge push in our profession toward the use to use the Directed Lie Comparison question (DLC). The truth verification field is divided into “pro and con” towards this idea, like many things in life. This article will research whether this “new fashion” is really the correct way or the easy or lazy way to conduct psychophysiological truth verification examinations, as well as make comparisons between the advantages and disadvantages between the DLC and the Probable Lie Comparison question (PLC).
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