The Lie Behind the Lie Detector The Lie Behind the Lie Detector's popular free book on polygraph validity, policy, procedure, and countermeasures. Be sure to download a copy (1 mb PDF). Post comments, criticism and suggestions for new editions here.
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A PI's Polygraph Opinion
Take this for it is worth. I use polygraphs everyday in the private and criminal defense arena. I have referred 1000's of individuals suspected of crimes, after doing the background work.
I have...

Started Mar 7th, 2006 at 2:05am by PI_Insight
3 3360 Last Post Mar 8th, 2006 at 10:21am
By: PI_Insight
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10 of the same questions. Stefano please help.
If the poly test is based on ten exact same questions but in diffrent order does that mean its relevant / irrelevant test?

Started Feb 27th, 2012 at 6:02am by yessur (Guest)
2 1637 Last Post Feb 9th, 2018 at 7:37pm
By: uncertain2018
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3rd Edition Coming Soon
Work on the 3rd edition of The Lie Behind the Lie Detectoris nearly completed, and a public release is anticipated in August 2003.

Started Jul 29th, 2003 at 9:06am by George W. Maschke
« Pages 1 2 3 »
34 10636 Last Post Aug 25th, 2003 at 7:36pm
By: Marty
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3rd Edition Released
The 3rd edition of The Lie Behind the Lie Detector may now be downloaded as a 1 mb PDF file here:
Revisions and additions include (bu...

Started Aug 18th, 2003 at 10:31am by George W. Maschke
1 1898 Last Post Aug 26th, 2003 at 5:47pm
By: George W. Maschke
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4th Edition Released
On Monday, 28 March 2005, released the 4th edition of The Lie Behind the Lie Detector.
The main changes appear in Chapter 4, which is on polygraph countermeasures:
  • Th...

Chapters 1 and 2 and virtually unchanged. A note about the DoDPI Law Enforcement Pre-Employment Test (LEPET) has been added to Chapter 3 (p. 115). In Chapter 5, contact inf

Started Mar 29th, 2005 at 6:20am by George W. Maschke
0 2086 Last Post Mar 29th, 2005 at 9:20am
By: George W. Maschke
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50,000+ Downloads
It is now conservatively estimated that The Lie Behind the Lie Detector has been downloaded over 50,000 times.

Started Nov 20th, 2002 at 5:25pm by George W. Maschke
« Pages 1 2 »
15 5808 Last Post Jan 24th, 2003 at 9:44pm
By: SecondChancePoly (Guest)
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Moved: 'Can the polygraph tech manipulate the test'
This Topic has been moved to Polygraph Procedure by Administrator
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A stupid question
Hello everyone im net to this fourm =)
If the qustion comes up. Have you ever smoked pot in the last 5 yrs comes up(witch i tried it when i was 18 now 23) Should I use a cm or should i use the cm...

Started Nov 16th, 2004 at 5:00am by AMero1202
2 2517 Last Post Nov 16th, 2004 at 9:50pm
By: AMero1202
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Add this to the book please.
Smiley  To the Author(s) of this book.
I read the book twice, and still thought I'd pass with flying colors since I am inocent of a sex crime, thats all I want to say about that since I didn't follo...

Started Oct 19th, 2002 at 7:06am by Guest (Guest)
2 2426 Last Post Oct 19th, 2002 at 11:21am
By: Guest (Guest)
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another question??
I'm a bit confused; do I need to combine a breathing pattern 'with' a mental countermeasure or do I just pick one countermeasure? The way it sounds I have to combine breathing with one of the other ty...

Started Jun 29th, 2011 at 1:24am by rawform
11 4922 Last Post Jul 5th, 2011 at 10:57pm
By: stefano - Ex Member
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Anti-polygraph and Polygraph Search Engines
Interesting tid-bits.  The website is constantly being chastised as ineffective by people who disagree with the information being provided.  
The website is chastised as providing false informati...

Started Sep 29th, 2008 at 1:50am by Fair Chance
0 1330 Last Post Sep 29th, 2008 at 1:50am
By: Fair Chance
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AntiPolygraph research
After a careful perusal of your site, it seems obvious that while you make countless criticisms regarding polygraph research, you haven't really done any of your own. In fact you seem to base almost a...

Started Dec 8th, 2007 at 3:31am by SanchoPanza
« Pages 1 2 3 »
This topic contains 1 attachment
35 14605 Last Post Dec 14th, 2007 at 4:46am
By: nopolycop
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anyone that has proof
Is there anyone that has taken the polygraph lied, but used countermeasures and passed?

Started Oct 19th, 2010 at 7:49am by conner52
5 4135 Last Post Feb 8th, 2011 at 3:08am
By: stefano - Ex Member
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Bodybuilder in fear of polygraph...
Ok, here is my situation.  I'm 18, never competed in a bodybuilding competition before in my life, just lift hardcore.  The only kind of competitions I could find are all natural competitions, I've al...

Started Aug 27th, 2004 at 5:26am by Bodybuilder
3 5248 Last Post Aug 27th, 2004 at 8:07pm
By: FollowMeHome - Ex Member
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Breathing CM
I've read several posts about the breathing CM and also read about different types. I apologize if I have missed it or something but should I remember one breathing CM and stick to it? Of course I was...

Started Sep 13th, 2014 at 10:32pm by Fly Guy (Guest)
3 3022 Last Post Sep 16th, 2014 at 1:17pm
By: George W. Maschke
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Breathing question ???
Hello just got done reading your publication Lie Behind The Lie Detector for the second time. Great work.
What I am wondering about is in chapter 4
"As soon as you recognize that the questio...

Started Mar 2nd, 2012 at 10:44pm by Joebrown (Guest)
1 2024 Last Post Mar 2nd, 2012 at 11:50pm
By: joebrown (Guest)
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Can a CM be to much of a Cm?
Can you be so good at a Cm by practicing that it becomes to much? Is it possible that an increase in heart rate can be way to much or does a computer polygraph not measure how much it inceases (Beats ...

Started Mar 31st, 2012 at 1:39pm by planostano (Guest)
0 1587 Last Post Mar 31st, 2012 at 1:39pm
By: planostano (Guest)
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cant' download book
I can't download the book for some reason, could someone email it to me at
I want to be a cop, but i am dq'ed because of experimenting with lsd and mushrooms and pot smoki...

Started Mar 4th, 2004 at 9:01pm by steven burd (Guest)
3 2332 Last Post Apr 4th, 2005 at 3:29pm
By: Bill Crider
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CM vs relevant question breathing pattern
The CM technique explained in TLBTLD does make sense. I have a question though. If you use breathing CM for a control question, let's say hold your breath 4 - 5 seconds. At the same time, you also hav...

Started Oct 18th, 2009 at 12:01am by tedt3526
9 7790 Last Post Jul 11th, 2012 at 11:44am
By: Daniel Rustburn (Guest)
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Congratulations, gentlemen
On your recent offering of The Lie Behind The Lie Detector, 2nd edition.

Started Mar 8th, 2002 at 4:06am by beech trees
4 4112 Last Post Jun 24th, 2002 at 3:36am
By: G Scalabr
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