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Law Enforcement Detect Deception

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Law Enforcement Detect Deception
Daniel

Speech 10 My research topic focuses on how people who work in the field of law enforcement

detect deception. Whether it be through interrogations or consensual encounters. I have a really

strong interest in this topic because I am currently working towards a degree in Administration of

Justice. I want to work as a police officer and eventually work my way into the DEA (Drug

Enforcement Administration). I also have a couple of family members working in law

enforcement who have introduced me to many police officers, which really encourages me to get

into the field. Police officers are constantly getting lied to, and it very important to learn the

skills necessary to determine whether or not someone is
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So, there are many reasons for the way someone may be

acting or talking and you can’t just accuse them of being a liar. Another common form of lie detection has to do with micro-expressions. Which are a

much more reliable detection method than analyzing body language. Micro-expressions are split

second expressions that you make on your face while talking. They are very difficult to pick up

unless you are trained and have had a lot of practice doing it. I remember watching a video in

class by Paul Ekman on the same topic, but even before that one of my relatives who works in

law enforcement and has done several interrogations told me all about it. I’m paraphrasing, but

he basically said you need to look at the micro-expressions and compare them to what the person

is saying or hearing, and that’s how you tell if the person is lying to you. For example, if

someone is telling you something and you see a distressed expression on that person’s face, that

Macias
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These tests are used extensively in the

criminal justice system of the U.S.. Moreover, most police departments have a polygraph

examiner to support their investigative divisions. Honts claims that the industrial uses of the

polygraph test are far more important than the criminal justice applications. They determine who

becomes a law enforcement officer, who has access to the U.S. government’s most closely

guarded secrets, and who has access to and control over our most dangerous weapons. The

polygraph, however, is still beatable. It is extremely difficult but it can be done.

While doing my research I came across a new way to detect lies. Justin McLachlan of

Popular Science discusses a new technology that could potentially be the most effective way of

detecting lies. There are scans done on the brain called fMRI scans. Unlike the polygraph, which

detects the way your body reacts, these scans read brain activity to determine whether or not

someone is lying. The only problem is. at the moment, these tests are only 75-98% accurate. That

is not good enough because somebody’s life could be on the line. In the future, however,

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