Do You Believe In Polygraph Test?

Discussion in 'Science & Nature' started by Ina I. Wonder, Aug 9, 2016.

  1. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
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    I wasn't sure where this subject should go, but science seemed appropriate. If not, I'm hoping Ken will place it where it belongs.

    I've seen polygraph test used in different ways. For job interviews and issues, in our legal system, even parents having their children tested. Of course we always see it in TV shows, and the impression is that passing or failing the test is proof of guilt or innocence. What do you think? Do you believe the polygraph is a valid test?
     
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  2. Chrissy Cross

    Chrissy Cross Veteran Member
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    I thought it wasn't allowed as evidence in court? There's a lot of factors involved with it so I wouldn't say it's 100% proof of lying.

    Some people can lie with no effect on their body at all, no rise in pulse or BP etc. also if you believe your lie like some people do, then you will also pass.

    Also depends on the person giving the test and how good they are at reading results, etc.

    So, I guess my answer is No, I don't put too much faith in it.
     
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  3. Chris Ladewig

    Chris Ladewig Well-Known Member
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    Ina I believe they can be used as a tool to help assess the quilt or innocence but it can be fooled in either direction. So I think that it should only be used as part of a larger group of investigative tools.
     
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  4. Corie Henson

    Corie Henson Very Well-Known Member
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    I have seen a documentary about that lie detector test. As per the explanation of the show's narrator, the polygraph is influenced by several factors such as heartbeat (or pulse rate), body temperature and some other factors that I already forgot. In other words, it is a combination of factors. However, the resulting graph is only suggestive and not conclusive.

    You are right on that, @Chrissy Page, that's also what I know. But when the polygraph test becomes a perfect tool to detect if a person is telling the truth or lying then trial lawyers be jobless.
     
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  5. Joe Riley

    Joe Riley Veteran Member
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    I'd be lying, if I said I did.;)
    faux-joe.jpg
     
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    Last edited: Aug 10, 2016
  6. Patsy Faye

    Patsy Faye Veteran Member
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    I don't believe in the test and think it should be scrapped, there are far better methods used today
    If I did one, I would fail - I would be nervous even though innocent
    :eek:
     
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  7. Diane Lane

    Diane Lane Very Well-Known Member
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    I had one job in the past that considered using it as a tool on employees. I told them (I worked in corporate security at the time) that I'd quit before subjecting myself to the test. I don't recall now what use they were considering it for, whether hiring/promoting or determining theft guilt or use of drugs or other criminal activity (we saw plenty of all among the various employees over the years), but I tend to get anxious, and wouldn't trust it for use on people who do. There are ways to fool the test, and there are reasons it's not admissible in court, and that's good enough for me.

    I do think it can serve as one tool for investigators, but I don't consider it reliable enough to be used as a single measure. I think is is probably being phased out in many cases, other than perhaps criminal investigations.
     
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  8. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
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    I've had three polygraphs, and failed all three. The first was when I was 11, and CPS tested the kids in the home I was in, it concerned the foster father. Didn't pass, and was transferred to another foster home. The second was when I was working for a convenience store. Someone stole some money orders. I proved I was off visiting in Louisiana for the week that the theft happened, or I would have been charged with the crime. The third was for a job interview in the accounting department of the city of Houston. Didn't pass, and didn't get the job either.

    Now I just say no to polygraphs. I don't know why I can't pass those darn test, but I can't.
     
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  9. K E Gordon

    K E Gordon Very Well-Known Member
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    I think in general they are reliable but they have their problems. This is why they aren't admissable in court. I have never had to take one. I do pay attention to them a great when they are used in criminal investigations though because it seems like the person who fails it is generally the guilty party. I watch alot of those crime shows on TV So this is something that I pay a lot of attention to.
     
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  10. Chrissy Cross

    Chrissy Cross Veteran Member
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    I've never been asked to take a polygraph test and I worked in the largest bank in Chicago in the early 70's. I was in securities and collections and was in a fairly large cubicle that was always locked
    And you had to use your key every time you left and came back. I dealt with the copies of the money transactions from big names like Goldman Sachs, Solomon Bros., etc.

    At the end of the day I had to balance with my boss who handled the actually transaction. Every day the amount was in the millions and one wrong number put into the adding machine and you weren't going home til the mistake was found. I hated that job. The only good thing about it was being in downtown Chicago and going out to lunch with a few friends to some neat restaurants. Italian village was a favorite.
     
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  11. Chrissy Cross

    Chrissy Cross Veteran Member
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    image.jpg

    This was the bank and it took up a whole block almost.
     
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  12. Joe Riley

    Joe Riley Veteran Member
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    They probably have a hard time finding a "stack of Bibles" these days!;)
    [​IMG]
     
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  13. Bobby Cole

    Bobby Cole Very Well-Known Member
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    Precisely the point @Joe Riley! If we answered the question proposed by the OP truthfully but was suspected of prevaracation then where indeed would we be? I think the proper way of addressing the situation at hand would be to ask the question: Do lie detectors need lie detectors to make sure they are telling the truth regarding their assessment of a client suspected of telling the truth or a lie? And, are we speaking of little Johnny lies or Big Hillary lies?

    Now, in order to answer this question properly and if we do things the way that our government prescribes, we must appoint a committee which appoints a sub-committee which submits a grant request from Congress who we know are going to lie without any testing, but will give us the necessary funds to pay off the main committee to keep them from lying about the eventual findings regarding the topic at hand. (whew!)

    But, to make it short, "do I believe in lie detector tests"? It totally depends on the situation. If I am telling the truth they are pretty accurate but if I am lying I am dern well sure that they do not work at all !!
     
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  14. Chrissy Cross

    Chrissy Cross Veteran Member
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    Ha ha, Bobby! I feel the same way. You would know though that I'm lying because I'm not good at it, don't need a machine, just look at my face....I'll be blushing and will avoid making eye contact...probably talk too fast.

    Of course online it's easier. I actually believe I look like my avatar. :)
     
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  15. Joe Riley

    Joe Riley Veteran Member
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  16. Texas Beth

    Texas Beth Well-Known Member
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    There are small groups of people who can trick the polygraph machine and highly anxious people get false positives. But with a good tester who knows how to adjust for these 2 factors, a polygraph can be reliable. I would heavily consider the information obtained through a polygraph test.
     
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  17. Martin Alonzo

    Martin Alonzo Very Well-Known Member
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    Polygraph is old technology and can be fooled they have now more reliable lie detectors.
    I only wish that they had a fool proof lie detector because it could save money in court cases just have the person accused of a crime take a test and then take him to court or let him free.
     
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  18. Ike Willis

    Ike Willis Very Well-Known Member
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    I've always had good alibi's, so far.:D
     
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  19. Joe Riley

    Joe Riley Veteran Member
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  20. Lon Tanner

    Lon Tanner Well-Known Member
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    I don't believe that it should be the final say in proving GUILT or INNOCENCE.
     
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  21. Krissttina Isobe

    Krissttina Isobe Very Well-Known Member
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    For the most part yes I believe that poly graph tests are a sight into the depth of a person's true character. Even in NCIS Jethro won't take the polygraph test when asked to take the test, so I believe it's safe to say it's kind of accurate...I know NCIS is fictitious and though there is a real one that I couldn't watch, I know the NCIS is based on the real NCIS.
     
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  22. Ina I. Wonder

    Ina I. Wonder Very Well-Known Member
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    I guess growing up and hearing my father daily say to me, "Don't you lie to me.", or "Everybody lies, so don't think I can't tell.", even "God says all women are born liers,." My father had many ways of saying I was born lying, and I think that is the reason I can't pass that stupid test. To this day I still have problems with verbal test.

    What gets me is when I know someone was lying, but they can get people to believe them.

    Oh right, I forgot, those are born politicians.
     
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    Last edited: Aug 13, 2016
  23. Joe Riley

    Joe Riley Veteran Member
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