When a person takes a polygraph test, four to six sensors are attached to him. A polygraph is a machine in which the multiple ("poly") signals from the sensors are recorded on a single strip of moving paper ("graph"). The sensors usually record: The person's breathing rate. The person's pulse. The person's blood pressure.
Lie detection has been a topic of interest since the beginning of the 20th century, and since then a lot of different methods have been used to try to achieve this, such as changes in…
An individual's ability to discriminate lies from truth is far from accurate, and is poorly related to an individual's confidence in his/her detection. Both law enforcement and non-professional interviewers base their evaluations of truthfulness on experiential criteria, including emotional and expressive features, cognitive complexity, and paraverbal aspects of interviewees' reports. The
Decreased trust: If your partner keeps telling lies, it can have a direct impact on trust. The more lies they tell, the less you trust them or have faith in their honesty. Diminished compassion and empathy: Lying makes it harder to detect someone's emotions, which in turn, can diminish the compassion and empathy you feel toward that person.
Verbal cues are known to be far more diagnostic of deception than physical behaviours or body language. Relying on body language alone interferes with our ability to accurately detect deception
How to spot a liar. On any given day we're lied to from 10 to 200 times, and the clues to detect those lies can be subtle and counter-intuitive. Pamela Meyer, author of "Liespotting," shows the manners and "hotspots" used by those trained to recognize deception -- and she argues honesty is a value worth preserving. (Contains mature content) 18:14.
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how to detect a lie
