They feature frequently in real-life murder documentaries and, until 2019 when The Jeremy Kyle Show was taken off air, were a huge focal point for reality TV shows. But what does it feel like to ...

The polygraph or lie detector test has been in use for over 100 years. It has been heralded as a technological marvel that allows investigators to accurately determine when someone is lying and when ...

A: A polygraph, also called a lie-detector test, is generally used during interrogation by police. The instrument works by recording physiological functions such as blood pressure, heartbeat, ...

The results of a lie detector can sometimes be confused by medical conditions, anxiety levels, or natural body differences.