Last week the eyewitness pointed out who they think they saw in a police line up. What is that?, A police line up is a line of suspects for an eyewitness or victim to identify the culprit , In the last case we made the suspects take a polygraph test. What is the other common name for a polygraph test?, A lie detector test, In order for a polygraph test to work. You have to ask baseline questions. Give an example of a baseline question, The baseline question should be a question that the suspect cannot lie on. Ex: "Is your name Linus?", The polygraph test looks for body responses. What happens to a suspects heart beat when they start to lie?, When a suspect is lying, their heart rate will increase (Get faster). This shows on the polygraph test.

Lesson 27

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