Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror
×
The Courts Government Security News Technology

Ohio Court Admits Lie Detector Tests As Evidence 198

An anonymous reader writes "Last month, an Ohio court set a new precedent by allowing polygraph test results to be entered as evidence in a criminal trial. Do lie detectors really belong in the court room? AntiPolygraph.org critiques the polygraph evidence from the this precedential case (Ohio v. Sharma)."
This discussion has been archived. No new comments can be posted.

Ohio Court Admits Lie Detector Tests As Evidence

Comments Filter:
  • by bossesjoe ( 675859 ) on Saturday September 08, 2007 @10:40AM (#20520591)
    ...as long as people are still searching for some magical way to get the truth out of somebody. Won't happen short of the next fifty years of neurological research.
  • by Elemenope ( 905108 ) on Saturday September 08, 2007 @10:42AM (#20520601)
    antipolygraph.com? Well, anyway, this is quite unfortunate, especially if polygraphs are as unreliable as they have always been...and I haven't seen or heard anything to suggest that they aren't.
  • by deblau ( 68023 ) <slashdot.25.flickboy@spamgourmet.com> on Saturday September 08, 2007 @10:47AM (#20520629) Journal
    Getting evidence admitted is one thing, but getting a jury to believe it or give it any weight or credibility is something else entirely.
  • No (Score:4, Insightful)

    by spyfrog ( 552673 ) on Saturday September 08, 2007 @10:48AM (#20520635) Homepage
    "Do lie detectors really belong in the court room?"

    No. Next question please.
  • by GoatRavisher ( 779902 ) on Saturday September 08, 2007 @11:01AM (#20520745)
    I once interviewed for a job and was told that I would be required to handwrite a statement so it could be analyzed by their "handwriting expert." I promptly got up and left. They looked shocked. Apparently they initially tried polygraphing applicants, but found it to be too expensive. Years later I bumped into the HR person at another job and asked her about the success of the vetting process. She said it didn't work and if anything made things worse.
  • by Robber Baron ( 112304 ) on Saturday September 08, 2007 @11:25AM (#20520885) Homepage
    It doesn't "detect lies"!!! It detects physiological changes ONLY! Determining what those changes actually mean is entirely subjective and open to varied interpretations!
  • by Maxo-Texas ( 864189 ) on Saturday September 08, 2007 @11:29AM (#20520901)
    Give me a two by four and I can have you begging me to believe you are Osama Bin Ladin in under 60 minutes!

  • by Anonymous Coward on Saturday September 08, 2007 @11:29AM (#20520907)
    Exactly there's many things that can produce a false positive. While they try to make the process relaxed (comfortable chair, no noise, etc) there's plenty of factors to why a person can be stressed. If they ask "have you ever abused your kid" to a person that went through horrible child abuse, its reasonable to expect stress. Asking questions to a person with poor english skills may stress them out. Thats before even considering the factors they measure may even be caused by other things then stress. Breath rate, perspiration, heart rate... maybe they're just aroused? (Ok hopefully not on the child abuse question)

    I've been through a poly and talked with others that have and in my experience they look for the largest spike and dwell on that question. They'll tell the person that they think they're lying on it (which obviously makes it harder to pass that question when they repeat it). They'll try to convince you its just better to "confess". Then they'll eventually give up and say you passed (the question never gave a response high enough to cross the threshhold, just enough that they dwelled). Everyone I've talked to had a similar experience, where they were told they were lying on a ridiculous question.

    However as long as a poly gets people to confess, it's doing its job (these are background poly's)... so they're unlikely to get rid of them. The people in charge know they can't be trusted but know they also get some small results. Most spy cases the spies passed the poly because if you know what it is, it's easy to fool.
  • by Elemenope ( 905108 ) on Saturday September 08, 2007 @11:38AM (#20520971)

    That's fantastic! That means only people who can't afford better lawyers than the schmucks on TV will be imprisoned, and who cares about them, anyway?

    But, to lose the sarcasm for a moment, most defendant protections in criminal law were developed so as to defend even the indigent, since they are the most vulnerable to unfairness seeing as how their lawyers either suck or are overworked (or both). If a method of obtaining evidence is bad enough that a decently trained lawyer can demonstrate its utter ridiculousness, it does not belong in a courtroom in the first place. The competence of the defendant's lawyer should not be depended upon as the single fail-safe employed to determine whether a person should be deprived of their freedom.

  • by gvc ( 167165 ) on Saturday September 08, 2007 @12:00PM (#20521149)

    I bet at that point if the interrogated person is subjected to a lie detector, they will actually believe that the alternative sequence of events was actually the truth.
    This statement presupposes that the lie detector can determine someone's belief. It cannot, at least not any better than Tarot cards or tea leaves.
  • by gvc ( 167165 ) on Saturday September 08, 2007 @12:03PM (#20521163)

    Worse, they tend to work worse when the subject is already under stress.


    The above statement presupposes that lie detectors work at all. This presupposition is unsupported by evidence. So the statement is akin to "mediums are not as able to recall the dead if there's a skeptic in the room."
  • by AHumbleOpinion ( 546848 ) on Saturday September 08, 2007 @12:46PM (#20521441) Homepage
    Worse, they tend to work worse when the subject is already under stress

    My understanding is that they are really stress detectors. The flawed assumption is that stress indicates deception.
  • by Alicat1194 ( 970019 ) on Saturday September 08, 2007 @01:17PM (#20521653)
    In this case it is the DEFENSE offering the lie-detector evidence.

    It doesn't matter if the side offering the evidence is the defense or the prosecution - once the evidence is accepted it sets a (potentially dangerous) precedent.

  • The only thing worse than lie detector technology that doesn't work reliably, is lie detector technology that *does* work reliably. The only reason societies don't outlaw certain types of thought is that they are not detectable -- yet.
  • by Jonny_eh ( 765306 ) on Saturday September 08, 2007 @08:16PM (#20524479)
    Exactly! Just like a cop can't say in court "The defendant is a liar because he looks like one", a strss/lie detector should also be inadmissible in court. It still remains useuful to law enforcement though.
  • by Anonymous Coward on Sunday September 09, 2007 @05:59AM (#20527275)
    Which is why unstressed psychopaths find them easy to pass.

That does not compute.

Working...