Deception Detection in the Courtroom Essay Example | Topics and Well Written Essays - 1000 words

Deception Detection in the Courtroom - Essay Example For instance, the use of the polygraph can give misleading information about a person. The simple principle applied by polygraphs is that it is stressful to lie, and stress brings up certain changes to normal functions of the body. The deviations from the norm can be measured, and the levels of stress determined to give conclusions. Another technology that is applied is fMRI. This is a type of technology that gives the direct behavior of the brain. Studies have been conducted to ascertain the effectiveness of this technology through experiments. There are differences in the brain’s activities when a person is engaging in lies and when the person is telling the truth. This simple principle is applied in the use of fMRI. There are debates that revolve around the application of this technology in getting justice in court rooms, but they have not been agreed upon. In this technology, there are procedures applied to detect deception. First there is the Control Question Test (CQT), this uses simple yes/no answers to get the culprits’ data captured and the second is Guilt Knowledge Test (GKT). The test is used to unveil any hidden information from the person being tested. Another technique that can be used is brain fingerprinting, this technology applies the use of electroencephalography. This technique is used to detect any hidden information in the brain through measurement of electric brain waves. This technique is also being tested for the determination of whether individuals are engaging in lies or not.