The dirty little secret behind the polygraph is that the
"test" depends on trickery, not science. The person being "tested" is
not supposed to know that while the polygraph operator declares that
all questions must be answered truthfully, warning that the slightest
hint of deception will be detected, he secretly assumes that denials in
response to certain questions -- called "control" questions -- will be
less than truthful. An example of a commonly used control question is,
"Did you ever lie to get out of trouble?" The polygrapher steers the
examinee into a denial by warning, for example, that anyone who would
do so is the same kind of person who would commit the kind of behavior
that is under investigation and then lie about it. But secretly, it is
assumed that everyone has lied to get out of trouble.
The polygraph pens don't do a special dance when a
person lies. The polygrapher scores the test by comparing physiological
responses (breathing, blood pressure, heart, and perspiration rates) to
these probable-lie control questions with reactions to relevant
questions such as, "Did you ever commit an act of espionage against the
United States?" (commonly asked in security screening). If the former
reactions are greater, the examinee passes; if the latter are greater,
he fails. If responses to both "control" and relevant questions are
about the same, the result is deemed inconclusive.
The test also includes irrelevant questions such
"Are the lights on in this room?" The polygrapher falsely explains that
such questions provide a "baseline for truth," because the true answer
is obvious. But in reality, they are not scored at all! They merely
serve as buffers between pairs of relevant and "control" questions.
The simplistic methodology used in polygraph
no grounding in the scientific method: it is no more scientific than
astrology or tarot cards. Government agencies value it because people
who don't realize it's a fraud sometimes make damaging admissions. But
as a result of reliance on this voodoo science, the truthful are often
falsely branded as liars while the deceptive pass through.
Perversely, the "test" is inherently biased
truthful, because the more honestly one answers the "control"
questions, and as a consequence feels less stress when answering them,
the more likely one is to fail. Conversely, liars can beat the test by
covertly augmenting their physiological reactions to the "control"
questions. This can be done, for example, by doing mental arithmetic,
thinking exciting thoughts, altering one's breathing pattern, or simply
biting the side of the tongue. Truthful persons can also use these
techniques to protect themselves against the risk of a false positive
outcome. Although polygraphers frequently claim they can detect such
countermeasures, no polygrapher has ever demonstrated any ability to do
so, and peer-reviewed research suggests that they can't.
A Critical Examination of Converus Inc.'s Pseudoscientific "EyeDetect" Lie Detector
In "An Eye-Scanning Lie Detector Is Forging a Dystopian Future," Wired science writer Mark Harris investigates "EyeDetect," a new scientifically unproven lie detector being hawked as a replacement for the old scientifically unproven polygraph.
Suspected Serial Killer John Arthur Ackroyd Beat the Polygraph While Woman He Raped, Marlene K. Gabrielsen, Failed It
In June 1977, John Arthur Ackroyd raped Marlene K. Gabrielsen off Highway 20 in Oregon. Gabrielsen promptly reported the rape to police, who polygraphed both her and Ackroyd. Gabrielsen, a Native American, "failed" while Ackroyd, a white army veteran, "passed." Prosecutors declined to press charges.
The Polygraph Interrogation of Christopher Lee Watts (And How He Could Have Beaten It)
On 15 August 2018, Colorado Bureau of Investigations (CBI) Agent Tammy Lee conducted a polygraph interrogation of Christopher Lee "Chris" Watts of Frederick, Colorado regarding the disappearance of his wife Shanann and daughters Bella and Celeste. She was joined in the post-test interrogation by FBI Special Agent Grahm Coder.
5th Edition of The Lie Behind the Lie Detector Released
AntiPolygraph.org is pleased to announce the release of the 5th edition of The Lie Behind the Lie Detector. This is the first new edition in 13 years.
NSA Blocks AntiPolygraph.org on Twitter
The NSA (@NSAgov) has blocked AntiPolygraph.org (@ap_org) from following and viewing the NSA’s tweets....
Additional Documents from EEOC Case Implicating U.S. Secret Service Polygraph Branch
AntiPolygraph.org has obtained minimally redacted copies of six documents associated with the case of an applicant for a GS-15 information technology position with the U.S. Secret Service who received treatment for obsessive compulsive disorder and whose application was rejected following an allegedly failed pre-employment polygraph "test." Most of the audio recording of the polygraph session provided to the complainant and the administrative judge is incomprehensible.
Personal Statement of a CIA Analyst
A former CIA analyst describes her polygraph experiences with the CIA and as a contractor working for the National Reconnaissance Office (NRO), FBI, and Defense Intelligence Agency (DIA).
Polygraph "Testing and the Kavanaugh Confirmation Hearings
As most readers will be aware, polygraphy has been in the news recently with respect to the U.S. Senate Judiciary Committee's confirmation hearings for Judge Brett Kavanaugh, whom President Trump has appointed to replace Judge Kennedy on the United States Supreme Court....
Depositions of U.S. Secret Service Polygraph Operators Ellen Ripperger and Edward D. Alston
AntiPolygraph.org has obtained minimally redacted copies of the 18 October 2016 depositions of U.S. Secret Service polygraph operators Ellen Ripperger and Edward D. Alston.
The AntiPolygraph.org Podcast: Episode 1 - Polygraphs and the Kavanaugh Nomination
In this episode, podcast host George Maschke discusses Professor Christine Blasey Ford’s polygraph examination in connection with her allegations against U.S. Supreme Court nominee Judge Brett Kavanaugh, critical journalism on polygraphy inspired by this development, a proposed polygraph dragnet at the White House, a recent interview of polygraph critic Doug Williams on the Lions of Liberty podcast, and AntiPolygraph.org’s 18th anniversary online.
Complaint and Affidavit Concerning Malfeasance by U.S. Secret Service Polygraph Operator Ellen Ripperger
A complaint filed against the U.S. Secret Service documents how it used the polygraph as a pretext for blackballing a well-qualified senior electrical engineer with OCD.
U.S. Secret Service Polygraph Branch Challenge Coin
A U.S. Secret Service Polygraph Branch "challenge coin" has recently appeared for sale on eBay, and AntiPolygraph.org has obtained a specimen...
DHS OIG Whitewashes CBP Polygraph Complaints (or, CBP Dismisses 5 out of 6 Valid Complaints Against Its Polygraph Operators)
On 26 July 2018, the Department of Homeland Security Office of the Inspector General published report OIG-18-68, titled "Most Complaints About CBP’s Polygraph Program Are Ambiguous or Unfounded"....
NITV Hires Disgraced Ex-Cop Jerry W. Crotty II as Director of Law Enforcement Operations
The National Institute of Truth Verification, which markets a voice-based "lie detector" called the Computer Voice Stress Analyzer (CVSA), has hired disgraced ex-cop Jerry W. Crotty II to serve as its "Director of Law Enforcement Operations."
Former FBI Counterespionage Section Chief Peter Strzok Reportedly Failed to Pass Polygraph Screening "Test"
It has been reported that FBI Special Agent Peter Strzok, who was the chief of the Bureau's Counterespionage Section and who led the Bureau's investigation into former Secretary of State Hillary Clinton's use of a personal e-mail server for official business, failed to pass a polygraph screening "test," but nonetheless maintained his security clearance (which has since been revoked).
“Nailing the Pretest Interview”: A Presentation by Skip Webb
AntiPolygraph.org has obtained a copy of a 2005 PowerPoint presentation prepared by former U.S. Army Criminal Investigation Command (CID) Supervisory Agent and American Polygraph Association past president and past chairman of the board of directors Milton O. “Skip” Webb, Jr....
Credibility Assessment Standardized Evaluation (CASE) Prize Challenge
On 5 July 2018, the Intelligence Advanced Research Projects Activity (IARPA) posted a notice about a "Credibility Assessment Standardized Evaluation (CASE) Prize Challenge" to encourage innovation in "credibility assessment" (the latest buzzword for "lie detection," which has fallen out of favor)...
Polygraph Discussion on Witwatersrand University Radio Academy Program "The Science Inside"
Among the topics addressed in the 26 June 2018 episode of the Witswatersrand (Wits) University radio program and podcast "The Science Inside" was polygraph "testing."
Polygraph Place Bulletin Board Private Forum
This index is the beginning of an ongoing project to make the Polygraph Place Bulletin Board Private Forum, which was posted to AntiPolygraph.org in June 2013, more readily accessible.
Google De-Lists AntiPolygraph.org on Key Search Terms
Search DuckDuckGo for "polygraph" and you'll find that AntiPolygraph.org, which hosts more documentation on polygraphs than any other site on the Internet, and you’ll find AntiPolygraph.org in the top 10 results....
Michigan State Police Polygraphers Andrew Longuski and Derrick Jordan Arrested for Stealing a Bicycle and Disorderly Conduct
On Friday, 18 May 2018, two polygraph operators with the Michigan State Police, Lieutenant Andrew Longuski and Sergeant Derrick Jordan, were arrested on Mackinac island, where they were attending a polygraph conference, for stealing a bicycle and disorderly conduct.
U.S. Customs and Border Protection Polygraph "Test for Espionage, Sabotage, and Corruption" Exposed
In 2017, U.S. Customs and Border Protection, unable to fill available positions because of the agency’s roughly 70% pre-employment polygraph failure rate, began a "pilot program" whereby instead of using the probable-lie Law Enforcement Pre-Employment Test technique used by other federal law enforcement agencies, CBP applicants would instead be subjected to a new direct-lie technique based on the Test for Espionage and Sabotage, which is used by the Departments of Defense and Energy for security screening.
WikiLeaks CIA Vault 7 Leak and Child Pornography Suspect Joshua Adam Schulte Passed Multiple Polygraphs
On 23 August 2017, the U.S. Department of Justice indicted former CIA employee Joshua Adam Schulte for receipt, possession, and transportation of child pornography dating back to 2009.
NCCA Test Data Analysis Pamphlet
AntiPolygraph.org has today published the National Center for Credibility Assessment’s “Test Data Analysis: Numerical Scoring System Pamphlet” dated August 2017 (488 kb PDF). A note before the table of contents documents the changes made over the years.
NCCA Polygraph Countermeasure Course Files Leaked
AntiPolygraph.org has today published a collection of documents associated with the National Center for Credibility Assessment’s training courses on polygraph countermeasures. These documents, which date to circa 2013, describe the U.S. government’s best efforts to detect polygraph countermeasures.