by firman
Sabtu, 25 Februari 2012
Detect lies? Maybe this is a very difficult thing, because lying is a psychological problem that can not be known other than those that lie alone. In addition, many other factors that make it difficult to detect a lie, because the signs of a lying or telling the truth, sometimes does not show a difference, especially for a liar.One of the current scientific explanations that seek to explain and expose the lies are the body's physiological system. Lying is believed to have an influence on the physiology of the body patterns such as improper release of hormones (hormones lie), the appearance of physical behavior that is not fair, and behavioral responses appropriate response.
One example is to detect lies through eye contact. People who are believed to lie in the enlargement of the pupils affected, for trying to cover up his lies and excuses instead of telling the truth. So that people who lie, eye contact is sometimes difficult to be invited. But, what if the person is a liar who lied, so they can deceive his interlocutors, with the eyes of an older box to convince his interlocutor. This is the weakness of lie detection through eye contact.
Another example is detecting lies through body gestures.
People who lie believed to be anxious because of his lies. In fact, people who lie to the physical energy to the energy shift of the brain to look for a good reason to cover his lies. So sometimes people lie seemed calmer. Arbitrary even this is not too precise to detect lies.So far the assumption that a lie can be detected through eye contact, anxiety for the liar is not the proper way to detect lies. Could be, if it is used, can cause a fatal error.
To solve this problem, experts in the 1980s invented a lie detection (lie detector). It works by measuring the chemical and physiological activity of the body, blood flow / blood pressure (heart rate), and detection of skin (perspiration measuring tip of the finger). Is it true that these tools can accurately detect lies?
Some countries in the year of the 1990s using this tool as a criminal interrogation. Thus, by using this tool, one can read lying or not. However, scientific studies indicate that the data provided by the tool is very biased, so it can not be used as a benchmark people are lying or not. If the tool is still in use (some states still use it), it will generate a fatal conclusion.
There is no scientific explanation and tools that can detect lies with the person accurately. So you do not use methods that have been believed by many to be one way of lie detection. All methods were not accurate, and certainly, you hasilkanpun conclusions about a person will be very fatal.
http://www.psychologymania.com/2012/02/dapatkah-kebohongan-di-deteksi.html