How investigators extract truth from people
The point of an interrogation is to bring out the truth from a person and to do that, investigators use certain tactics. The most important part of an interrogation is calming down the suspect, because stress can affect memory and clear thinking. A lot can be done to achieve this. The interrogator will almost always use a low and slow tone, they will sit far away from the suspect to give them space and let out big exhales which are likely to be copied by the suspect. The suspect will also be seated near the door which is considered a safe space. When the person being interrogated becomes relaxed they will be asked simple questions that bring out positive feelings, like for example questions about family. After that, the real part of the interrogation can start. The suspect will be presented with details about the crime which only the interrogator can know about. If protective behavior occurs, like lowering your chin, the interrogator will try to get the person to admit to the crime. This is a nessecary step because body language is often misleading and isn't applicable in court. If the suspect doesn't admit to the crime, other tactics have to be used and the possibility of the person being innocent arises.
Isn't the opposite tactic - making the suspect anxious - also used in some cases? A relaxed person can control their thoughts and emotions better so they can hide the truth more effectively.
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