All polygraph questioning techniques that aim at some form of standardization or reproducibility involve comparisons of physiological responses to questions of central interest for the investigation ...

Polygraphs chart out blood pressure, breathing rate and sweat production to help an examiner determine whether a subject may be lying. The LX4000, produced by Lafayette Instrument, displays both raw ...

West Hartford Police Sgt. Paul Melanson’s detective abilities cover a wide spectrum. His skills range from the step-by-step deduction required for a field investigation of a kidnapping or homicide to ...

Murdaugh attorneys, who claimed the polygraph examiner engaged in “odd conduct” before administering an exam, asked the judge to deny or delay ruling to hold Murdaugh in breach of his plea agreement ...