Can Polygraph tests themselves be said to be fair and accurate and a sound basis of conviction or non conviction in criminal law cases ? You be the judge.
Ruminations - Lutte contre l'injustice: So called "Lie Detector" tests - Polygraph Accuracy - Almost a century of research in scientific psychology and physiology provides little basis for the expectation that a polygraph test could have extremely high accuracy. The theoretical rationale for the polygraph is ...
Simple Test Improves Accuracy of Polygraph Results (11/29/2007) - In order to prevent false positive results in polygraph examinations, testing is set to err on the side of caution. This protects the innocent, but increases the chances that a guilty suspect will go unidentified.
New Jersey Thinks Again about the Polygraph Test - Ed.2d 413, 419-21 (1998) (reviewing scientific studies showing that accuracy of polygraph tests ranges from 50 to more than 90 percent)). Some studies suggest that the accuracy rate is "little better than could be obtained by the toss ...
Polygraph Procedure - Probably going to use countermeasures, but I ... - You said in a previous post “It seems that of the two people involved in the polygraph exam, only the examinee knows for sure if the results are accurate or inaccurate. “ While I disagree that at the conclusion of the test only the ...
Is a polygraph test the answer? - relationship advice - A male reader, anonymous, writes (30 April 2009): Might want to Google "polygraph test" to find out about accuracy and if you can cheat while taking them. 1; 2; 3; 4; 5. <-- Rate this answer ............................... A female ...
Lie Detectors, Sex Offenders And Benefit Cheats - Presumably if they already knew that people were benefit cheats there would be no need to run the polygraph test in the first place, so “benefit claimants face lie detector” test is more accurate. And the voice-stress analysis test ...
Here is another expert source:
Did you know:
- The consensus view among scientists is that polygraph testing has no scientific basis?
- The FBI considered the creator of the lie detector test to be a phony and a crackpot?
- The man who started the CIA's polygraph program thinks that plants can read human thoughts?
- The foremost polygraph advocate in academia was discredited by a federal judge?
- A prominent past-president of the American Polygraph Association is a phony Ph.D., and this premier polygraph organization doesn't consider it an ethics problem?
- The longest polygraph school produces newly minted polygraphers in just 14 weeks -- less than half the time it takes to graduate from a typical barber college?
- The Defense Academy for Credibility Assessment (the erstwhile DoD Polygraph Institute) suppressed a study suggesting that innocent blacks are more likely to fail the polygraph than innocent whites?
- The researcher who developed the U.S. Government's polygraph Test for Espionage and Sabotage "thought the whole security screening program should be shut down?"
- The National Academy of Sciences concluded that "[polygraph testing's] accuracy in distinguishing actual or potential security violators from innocent test takers is insufficient to justify reliance on its use in employee security screening in federal agencies?"
- Spies Ignatz Theodor Griebl, Karel Frantisek Koecher, Jiri Pasovsky, Larry Wu-tai Chin, Aldrich Hazen Ames, Ana Belen Montes, and Leandro Aragoncillo all passed the polygraph?
- One of the most prolific serial killers in U.S. history passed the polygraph and killed again?
- Al-Qaeda and Iraqi insurgents know full well that the lie detector is bogus?
- You don't have to be a psychopath, go to spy school, or somehow believe your own lies to fool the polygraph? (We'll reveal how it's done and accomplished
source: http://antipolygraph.org/
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Tags: Accuracy Rate, Analysis Test, Criminal Law Cases, Detector Test, Detector Tests, Ed 2d, Google, Lie Detectors, Polygraph Exam, Polygraph Examinations, Polygraph Results, Polygraph Test, Psychology And Physiology, Relationship Advice, Ruminations, Scientific Psychology, Simple Test, Sound Basis, Theoretical Rationale, Voice Stress Analysis
By the sound of this, the answer to your question is no. I think it can contribute to a conviction, but it can’t be the exclusive reason for it. It should only be considered as a piece of evidence.
I don’t think so Lie detector test really works, because once i remember we were asked to make a project on building a circuit of Lie detector test, with which we can catch lier, later on we derived that when lier speaks untruth, moisture gets released more from his skin, due to which wire ring on getting wet.
When a well-trained examiner uses a polygraph, he or she can detect lying with high accuracy. However, because the examiner’s interpretation is subjective and because different people react differently to lying, a polygraph test is not perfect and can be fooled.
If we are diligent enough, we will know that the polygraph tests are not 100% accurate. We can use polygraph tests but it is should not be a single tool to rely on to prove that someone is telling the truth. We can make further investigations as a support and know more of the person’s past. This can help anyone to make decisions if a person is telling the truth or not.