Question

FORENSICS HELP!!!

Answer 1

Answer:

The first answer was a false negative, and the suspect was telling the truth.

Explanation:

In this example, we learn that a suspect is questioned about a crime, while he is later asked about his own personal information. When the suspect talks about himself, we observe a particular reaction. We assume that this information is the truth, as we have a way to check it. When the suspect talks about the crime, we observe the same reaction. This points towards the fact that the suspect is telling the truth. Therefore, if the polygraph registers the statement as a lie, we can assume that this is a case of false negative, but that the suspect was actually telling the truth.

Answer 2

Answer:

The first answer was a false negative, and the suspect was telling the truth

Explanation:

A polygraph machine uses some physiological changes to detect if a person is guilty or not. In this case, the same physiological change is read in a question with unknown validity and a question with known validity. Since the first reading had been recorded as negative, after the second question, the first question was seen to be a false negative and the suspect was probably telling the truth. An explanation could be that that is how his body reacts in a tensed situation.