RANCH
United we stand, divided we fall.
- Joined
- Dec 18, 2008
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This is one of those things that is difficult to google because you turn up all the results about how to beat a polygraph.
My knowledge comes from listening to every true crime podcast out there for the past 3 years or so. Often police experts that are interviewed, especially Jim Clemente, say that polygraphs are nothing more than an investigative technique, used to manipulate suspects. I can't think of any cases at the top of my head, but I know I have heard them say multiple times that people are told they passed so they will feel comfortable and continue being interviewed.
Since you can't provide a link to support your statement that it's common that police lie when a suspect fails a polygraph and tells everyone they passed I will have to regard it as an opinion only.
I wanted to examine at least one case where that was true to see if it was effective. For all I know it's been used only a few times by LE and had a zero success rate. That would statistically mean that it has little weight in deciding if Keith is being truthful in this case.
If you can find some cases where LE lied and told the suspect they passed a polygraph when they actually failed I would appreciate it.
Personally I don't see LE telling Keith he passed a lie detector test when he actually failed. I read inthedetails link above that showed examples of LE lying to suspects about them FAILING tests to induce them to confess. That makes perfect sense to me.
Telling a suspect they passed tests that they didn't doesn't seem to be a practical way of getting to the truth to me. JMO