In the US, they use a sensor pad the subject sits on to detect such attempts to modify the results.
Re:Attempts to Censor AntiPolygraph.org
by EForEndeavour on Saturday June 29, 2019 @09:32AM
(#20312462)
I wonder if vividly picturing a cavalcade of ultraviolent mental images is enough to disrupt the test.
Unfortunately, disrupting the test is the same as failing it. Typically, subjects are expected to pass it to avoid negative consequences.
I once went through a polygraph and used my meditative breathing techniques to calm my mind, and failed the test because I was "controlling my breath".
Re:Attempts to Censor AntiPolygraph.org
by kevin_thibedeau on Saturday June 29, 2019 @12:39PM
(#20313474)
I mostly belly breathe and have little upper chest expansion at rest. This caused some consternation during my test.
I was subjected to a polygraph test once, and I successfully misled the operator several times, by slightly biting my tongue (so I was asked, "you show heightened emotional response to X and Y, something you're trying to hide?")
Dunno how true this is and haven't heard of this trick elsewhere, though admittedly I haven't researched the topic. Other techniques in the ‘Little Brother’ books are real, apart from two or three that are doubtful to me.