People have been telling lies and deceiving since the beginning of humanity. DePaulo & Bell, 1996; DePaulo & Kashy, 1998; Kashy & DePaulo, 1996 have examined that people lie daily and it consists of about 25% of daily interactions with others.
Historically, people have looked at ways to deceive others in order to convince them of their honesty. 
Emotional arousal hypothesis suggests that lying produces emotional states, which then influence the way be behave. An example of that would be fear, which then would contribute to being nervous and movements which would not occur 
under situations when a lie wasn't told. Liars may also try to counteract the lie by unnatural movements.
Hurd and Noller (1988) conducted an experiment where they asked participants to identify whether a statement was true
or false. Participants talked loudly about the decisions they were planning to make. When discussing a lie, participants were discussing whether a scenario was deceptive.
Larson, 1927 and Marston, 1917, examined that most people cannot identify a lie, scientific investigations have found a few approaches to detecting lies, such as a polygraph.
Advertisements