How do we know the person conducting the lie detector test is telling the truth?

Question

The point is we don't. It all comes down to believing someone. We can either believe the person subject to the test, or we can believe the person administering the test, and the skill of their interpretation, thus introducing a new variable for error. The inference is that the person administering the test would have to undergo a test themselves to evaluate they are telling the truth, and then so would the person evaluating that test ad infinitum. (It is turtles all the way down - holding up the earth...)

Answer 1

Yes, your evaluation is right, and that is why lie detector tests are inadmissable in a court of law. bettyk

Answer 2

I'm about to make you "immune" to lie detector tests. Watch:
They don't work.
The machine detects physical signs of stress - this stress is assumed to be indicating a lie, but this is untrue. Fear, nervousness, anxiety, anger, amusement, and more. All cause the responses that are associated with lying by the machine.
Polygraph technicians are scientists the same way astrologists are astronomers. Anyone can read the graph, but only those trained can interpret them.
Like voodoo, lie detectors only work on people that believe they do.
If that's not enough to convince, get this: Scientologists use a simplified polygraph machine to test each other to get "clear". They pass the tests by training out their supposedly involuntary physical stress responses.

Answer 3

Lie detector are supposed to work basing on the assumption that when a person is lying, his body temperature goes, heart rate increases, and pulse rate would become unstable as well. A lie dectector checks those signs are proofs of lying. However, depending on how the questions are framed and the skill of the interrogator, the lie detector reading would vary as well.

This is while I agree with ..this.. that lie detector are not reliable, and its results are not counted as solid evidence in court of law.


XR

Answer 4

From what I've read it takes a skilled operator. I think all that stuff in the police movies is baloney. They don't harass you and try to break you down. Instead they start off by asking a few questions, your age, job, etc (questions they already know the ans. to). then they proceed with the real questions and compare the results.

Answer 5

The person with the motivation to lie is the one taking the test, not the one administering it. Polygraph examiners must be certified and re-certified periodically, and make their money by producing accurate and reliable results. I assume they value their job enough to do it correctly.

Answer 6

It's all printed on paper so the person conducting the test has no choice but to tell the truth.

Answer 7

Problem number one with the test.
Problem number two is results vary with medical conditions.
Problem number three results vary with medications.
Problem number four results vary with the way questions are asked.
Problem number five, they aren't worth a durn in court anyway.
Problem number six, the testor can make the results be either way.
ANSWER: DON'T TAKE ONE!!!! UNLESS FOR EMPLOYMENT PURPOSES.

Answer 8

The person giving the test is not answering your questions.

Answer 9

Ha yeah you ask a good question. For instance BRUCE on Jeremy Kyle! Could have a bad day and stir some trouble up! Hee.

Answer 10

The person conducting the polygraph is not required to answer any questions, therefore how can he/she lie. They only ask questions.