Polygraph Testing

[Roch]

Wouldn't it have made his point better if he'd said that JB was NDI on all of the relevant questions? It wouldn't have taken up much more paper or time.

I have googled it - so far all I can find is GDS stating that he had 'conclusively' passed the test, no specific details of the results for the other questions.

I'm not sure, recent test on Luke and his mum stated only three questions also.  Mullins expressed something like there wasn't a flicker of doubt (re Bamber).  I'm at work so cant check properly.  I think there's two questions missing also.  One about did he tell JM he was going to kill his family and one about a loudhailer being used for two hours (?)  Something tells me there was 13 questions in total.  Maybe if you've got time you could do some more digging.  One of the newspaper articles had more questions in the the other ones.

[sc82]

I wouldn't rely too heavily on these tests - Ted Bundy passed a polygraph test and we all know how that ended!

[Marie27]

Brilliant post OnceSaid. Very interesting that the percentages are much higher that those on Wiki, which relies on what ever Tom, Dick or Harry writes on there. Wiki can be deemed to be flawed at times.

Jeremy Bamber volunteered to take the test in 2007:) To me, is a clear sign of him being not guilty otherwise, he would have refused the test and made up excuses for not taking it.   

I was interested in the part where it said that is can detect those trying to beat it.....

I am sorry Patti you seem to have been totally mislead. Firstly, a lie detector test, or polygraph test to give it's correct name is a test has little or no validity amongst scientists or courts of law. Lie detection has a long history in mythology and fairy tales; the polygraph has allowed modern fiction to use a device more easily seen as scientific and plausible. It is a test that measures normal human responses to questions. The belief is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers.
Secondly, based on the first statement, it presumes that all humans will exhibit the same responses if they try to be deceiptful in the answers to questions - sweating, shaking, increased heart rate, facial blushing etc. These are direct results of feelings of guilt, embarassment, shame and the knowledge that one has just told a lie etc. However, in a psychopath these normal physiological responses are, by-and-large, absent. Therefore the psychopath will appear to be telling the truth when questioned as they will exhib normal responses to highly important questions.
For a psychopath to tell a lie is second nature and therefore will exhib virtually no physiological response.
Polygraphy has also been faulted for failing to trap known spies such as double-agent Aldrich Ames, who passed two polygraph tests while spying for the Soviet Union. Whereas serial murderers Ted Bundy and Green River killer Gary Ridgeway to name but a few have passed these without any difficulty at all.
In short, it is a useless tool and had been widely discredited by scientists and psychologists alike, especially in Europe where it is mostly used by defendants trying to add weight to their protestations of their innocence.  It CANNOT detect people using methods designed to beat it.
It is probably best summed up on this site 'How to Cheat a Polygraph'
http://www.wikihow.com/Cheat-a-Polygraph-Test-(Lie-Detector)

[Marie27]

I wouldn't rely too heavily on these tests - Ted Bundy passed a polygraph test and we all know how that ended!

Well said. Bundy did indeed pass with flying colours. It was a wake-up call for those who had become to mired in this clearly misleading 'technology' in the US. Polygraphs are now mainly used by and and been given over-inflated importance on cheap, puerile daytime chat shows trying to discover a partners infidelity. That says it all!.

[Roch]

Marie, you would clearly have no qualms about taking one (regarding something you had lied about).  I take my hat off to you.

[Patti]

I am sorry Patti you seem to have been totally mislead. Firstly, a lie detector test, or polygraph test to give it's correct name is a test has little or no validity amongst scientists or courts of law. Lie detection has a long history in mythology and fairy tales; the polygraph has allowed modern fiction to use a device more easily seen as scientific and plausible. It is a test that measures normal human responses to questions. The belief is that deceptive answers will produce physiological responses that can be differentiated from those associated with non-deceptive answers.
Secondly, based on the first statement, it presumes that all humans will exhibit the same responses if they try to be deceiptful in the answers to questions - sweating, shaking, increased heart rate, facial blushing etc. These are direct results of feelings of guilt, embarassment, shame and the knowledge that one has just told a lie etc. However, in a psychopath these normal physiological responses are, by-and-large, absent. Therefore the psychopath will appear to be telling the truth when questioned as they will exhib normal responses to highly important questions.
For a psychopath to tell a lie is second nature and therefore will exhib virtually no physiological response.
Polygraphy has also been faulted for failing to trap known spies such as double-agent Aldrich Ames, who passed two polygraph tests while spying for the Soviet Union.
In short, it is a useless tool and had been widely discredited by scientists anf psychologists alike, especially in Europe where it is mostly used by defendants trying to add weight to their protestations of their innocence.  It CANNOT detect people using methods designed to beat it.
It is probably best summed up on this site 'How to Cheat a Polygraph'
http://www.wikihow.com/Cheat-a-Polygraph-Test-(Lie-Detector)

Please point out where I am totally mislead? There is no need to tell me about polygraph tests. I don't believe that they are 100%.

[susan]

sc82  I think they are used by the Probation Service as well what a waste of public money if what you are saying is correct.  Maybe somebody should tell them how useless they are.

[lookout]

Marie27,,why do you think that JB hasn't pleaded guilty all these years.? As in doing so,,there's every chance he'd have been released by now,,but no,,JB won't do that because he knows in his own heart that he's innocent,,so on principal he would never admit guilt simply because he isn't.
JB will have already known this,but prefers to do it his way which is to prove his innocence.

Polygrams have played a large part within the criminal society and will never be discarded because of one or two failures,,,as more have been recorded as being guilty of their crimes, as not.

[nugnug]

yes you can find sites all over the place that tell you how to cheat are polygraph test but i have yet to see any evedence thse methods work.

[susan]

very well said nugnug

[nugnug]

i can name 2 cases where it proved that the lie detector did work colin stag and adrian prout.

i might also add that collin stag passed  2  lie detector tests.

[Patti]

i can name 2 cases where it proved that the lie detector did work colin stag and adrian prout.

i might also add that collin stag passed  2  lie detector tests.

Did Adrian Prout fail the test nugnug? 

[susan]

Hi nugnug  yes you are right they passed polygraph testings you will find some people believe in them if the persons fails the test but if they pass they say just a waste of time they are rubbish.  Can,t win can you I  myself do put quite alot of faith in them and if carried out by a person who is really experienced I think they are pretty accurate.

[Patti]

Hi nugnug  yes you are right they passed polygraph testings you will find some people believe in them if the persons fails the test but if they pass they say just a waste of time they are rubbish.  Can,t win can you I  myself do put quite alot of faith in them and if carried out by a person who is really experienced I think they are pretty accurate.

Hi Susan Do you miss maggie and Grahame? Where is mertol? 

[susan]

Hi Patti  yes I really miss Grahame he was so funny.  I am missing Maggie I had a pm from her from the airport and she has two weeks to go yet I will have withdrawals.