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How to pass/invalidate a lie-detector test.
They are not considered admissible evidence in court (but the criminal justice system still use them to a degree..), and they can be interpreted with intentional bias, so I think it's fine to share.
One of my psychology professors told me that if you hide something like a sewing needle in your shoe's insole, you can ever so slightly apply pressure so that the poke causes a physiological spike. They monitor for movement, so it has to be very minute. The goal is to do this on every control question so that they cannot establish a baseline and have to give up.
I'm not sure if this is true, likely not, since I saw it in a movie:
At the beginning, when they were establishing the baseline, they asked whether she had ever used marijuana. She said yes, which was a lie, but the interviewer thought it was the truth, because come on, who would've admitted that?
The bottom line is, when they're asking the baseline questions, lie (sometimes).
Again, I don't know how far this is from the truth, but that show was pretty cool.
I'm pretty sure the baseline questions are things they already know the answer to. Like what's your name, where were you born, etc. So lying about them would be obvious.