In TLBTLD, we suggest biting down on the side of the tongue hard enough to cause pain but not physical harm because we believe this is easiest to accomplish covertly. If you can bite the tip of your tongue un-noticeably, that should also work.

George,

   can a pebble or a tack inside your shoe work too?  will this bring about any kind of response?

could one pass a polygrpah by just simply biting their tongue?

how would you make it timely with the control questions? Would tongue biting not be detected when you speak?

My god, what horrible advice. Tongue biting is a surefire way of being detected. Your response on the charts will be so late and obvious-----who the hell makes this stuff up? You want a countermeasure? Stage a phony car accident and don't show for the test. You're sunk if you try this stuff. You should tell the examiner that you know how the test works and tell him that you intend on passing the test without looking silly. This is a spectacular website with top shelf graphics and all. As an examiner, I gotta tell you---if this monkey business worked, there would be no polygraph testing anymore. What a beautiful web design though.

George, have you ever used countermeasures against a test which had very serious consequences?----I doubt it. I am not with "bluster" as much as incredule.

Biting your tongue on polygraph questions results in overly dramatic "pen jack" and again, a polygraph examiner does not need an admission of countermeasures to know better----we are a wickedly suspisious lot. As I said to Sergeant, when my 3 year old smells like poop, I don't need him to admit having done so. What does your domestic partner think of your preoccupation with computer blogging all day and all nght?

I did use countermeasures (breathing and mental arithmetic) against a test which would have a very serious outcome. They WORKED. I passed. 

what about the tightening the anal sphincter?? If there is no pad on the chair is it a good method? How would I incorporate it into my countermeasures? The same way as the toungue biting during the control questions?? How much tightening is required? "moderate" or maximum? change my breathing also? or just mental aritmetic concurrently?   

I am going to be taking another polygraph soon for a new prospective employer. If I can truthfully answer "NO" to the relevant questions, do I trust that I will pass or do I attempt the countermeasures anyway? Not an easy question to answer. I can't believe I have to go through this horse-shit again.   

as a side bar, I took one polygraph where they used the pad on the seat but I employed no countermeasures and "failed" the test-or at least inconclusive.  The next time around (different employer)  I used "Breathing" countermeasures and passed. In that case they had no pad on the seat and I wondered if should have used the sphincter method instead--since I passed it doesn't really matter....I did use the "blocking" breathing method on the control questions when I passed. Could a more experienced examiner find me out even if I employ the blocking method properly? Are the other breathing countermeasures harder to detect?  It seems to me the blocking is the easiest to do but I would try to use a different breathing method if it was less "detect-able".  And finally, if there is no pad on the seat would you reccomend using the sphincter method?