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Lie detectors (also known as polygraphs) measure vital signs in order to detect when a lie is being told, but by altering vital sign readouts during the control question phase of the test, it is possible to deceive the m... More »

www.reference.com World View Social Sciences Psychology

According to a National Security Agency (NSA) whistle-blower, Russell Tice, it is possible to beat a polygraph by skewing the initial data and forcing strong reactions in response to known lies. He also suggests daydream... More »

www.reference.com Government & Politics Law Enforcement

Antidepressant medications such as lithium, Prozac, Valium or Xanax can cause skewed results on polygraph tests, claims American Polygraph Services. However, it goes on to state that these results are immediately visible... More »

www.reference.com Health
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Unless you have a friend who owns and is trained to use a polygraph machine, it is very difficult to find a free lie detector test. In addition, many experts question the validity of polygraph machines. More »

www.reference.com Technology

A lie of omission is a lie in which someone deliberately withholds pertinent details about something in order to skew someone else's idea of the truth or engender a misconception. Although a lie of omission is not techni... More »

www.reference.com Government & Politics Law

In order to pass a predictive index test, the employee has to prove that they are decisive, comfortable speaking about themselves and friendly in the work environment. Avoiding strong answers and sticking with neutral op... More »

www.reference.com World View Social Sciences Psychology

The normal resting vital sign ranges for a healthy adult are a breathing rate of 12 to 18 breaths per minute, a heartbeat of 60 to 100 beats per minute, and a temperature between 97.8 to 99.1 degrees Fahrenheit, accordin... More »

www.reference.com Health Medical Ranges & Levels