gitana1
Verified Attorney
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- May 31, 2005
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I wrote up a more thorough take on this and deleted it earlier. I'll try to make a point with what I was proposing before I hit delete and hope it comes out right.
There are generally four outcomes of a polygraph (per question of course):
1. Respondent innocent, deception (-)
2. Respondent innocent, deception (+)
3. Respondent guilty, deception (-)
4. Respondent guilty, deception (+)
No. 1 is the outcome wanted by law enforcement and suspect. No. 4 is only wanted by law enforcement. The other two are false positives and are totally worthless. Law enforcement also know that they are unreliable, and thus discount positives where outcome No. 1 above occur. As well as No.4. Polygraph misleads law enforcement as often as it helps, and LE can do better than what it offers. They are smart cookies, and have a ton of reliable tools better suited for investigation, and work on 100% fact.
Are you willing to clear a person, or is the bar low enough for arrest and prosecution, to rely on something that "70% of the time, works every time?" It isn't reliable for either, rather any, of its outcomes.
Well as we all know, polygraphs can’t be used in court as evidence that someone committed a crime, when they’re being tried for that crime, no arrest is going to take place on the basis of polygraph results.
It’s an interrogation tool. That’s it.
And my spouse goes missing? You better believe I’m sitting right down and letting them strap me in and interrogate the hell out of me.