Detect Lies: Body Language vs. Polygraph
“Before someone is lying, he must first think of the truth.” (Leon
Lies - one of the oldest communication skills of human nature and yet
such a complicated one . The brain is capable of the facts
corresponding to the truth , to convert it into one or just several
alternated versions and eexpress itself. For a professional liar in a
matter of seconds, for the occasional liar it's a very stressful
situations. But how can you recognize lies?
Men and women lie several times a day. With some practice you can see
such typical features of body language that show up in the case of
lies . These include not only high gestural or mimetic signals , but
also substantive and visible emotional changes of behavior. Coughing ,
licking of lips , or playing with the hair point on lies. Furthermore
avoiding eye contact or frequent blinking also. In the selection of
words lies can be identified as following: The person does not answer
promptly. After a delay he could on the one hand give a general
answer, instead, such as "I bought the" he says, "it can have happend
that I bought something". In the hesitation occurs an unusual
statement which is followed by exaggerated facial expressions.
Although these points are to be used more for good friends, because
then you can better notice the unusualness, but indicating excessive
wrinkling that completely does not fit to the given situation may also
at lesser-known persons indicate that something is wrong. Typical
signs of nervousness, which may also be signals of lies simultaneously
are trembling hands, suddenly irritable mood or chewing nails.
Of course, one should
make sure that these signals may indicate not only lies. There are
the same ones that also occur with increased nervousness .
It is part of human nature to be suspicious and in cases where
people talk about who is guilty, you feel automatically accused .
Psychologists like Freud or Ekman, agents such as Leon Martin or
gifted human nature as Churchill gained this knowledge of human nature
through many years of work and practice. One can learn and follow
their tips and tricks, but to actual success in detecting lies, it is
recommended to choose a much more fast and cost-effective solution .
Recognizing lies with
a polygraph promises much greater accuracy than the physiognomic
analysis of a respondent.
The question "Is this really an indication of lying or just a
stress signal?" becomes then unnecessary!
The Polygraph enables the evaluation of the instructions namely at a
certainty of up to 99%. Based on biological measurements invisible
reactions such as increase in blood pressure or fine perspiration on
the skin are evaluated and presented in the form of a graph. Thus,
deviations from the norm are visible. Skilled liars who get very
quickly oover the first phase (think of the truth) and are already
pronounce the lie with a peaceful expression are not to see through
for inexperienced questioners. With the polygraph lie detector this
short delay phase will be revealed and the truth comes out in much