FA_Q2
Gold Member
- Dec 12, 2009
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Except that is false.duh-----dats what I wrote. There are frequent physiologic changes DETECTED via skin leads commonly seen when a person lies related to
pulse, blood pressure, sweating. ------the test can be overcome by all sorts of manipulations including meds like "beta-blockers' and mimicked by emotional reactions not related to deceit
Ask any polygraph examiner to to tell you what the specific reactions to lying are and they'll tell you they don't know.
Because they don't.
If they could say definitely "This is a lie" or "That is a lie", then polygraph results would be admissible in court. But because no examiner would ever say that, they're not...
your answer is naive----there are PATTERNS on the polygraph (DA WAVES) that correspond
STATISTICALLY to what happens when a person lies at the SKIN. ----same is true of
EEG (electroencephalogram) for that matter--same is true of EKG
![www.apa.org](https://www.apa.org/Content/Images/social-share.png)
The Truth About Lie Detectors (aka Polygraph Tests)
Most psychologists agree that there is little evidence that polygraph tests can accurately detect lies.
![www.apa.org](https://www.apa.org/Content/Images/launcher-apa-144.png)
That is the core problem with lie detector tests, there are no actual patters that correspond to deception. The results is entirely based on interpretation. I read a rather small study, or more like a test, a few months ago where they gave polygraphs to different 'experts' and the results were absolutely inconsistent. Even when using the SAME PERSON. The results were from polygraphs given several years prior so the tester was not necessarily aware of the first interpretation they had given. I wish I could find the link again but it escapes me atm.