Polygraph

San Jose P.D. Polygraph Operator Robert E. Foster Charged with Multiple Felonies

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The Santa Clara County, California District Attorney’s Office has charged Robert E. Foster, a polygraph operator with the San Jose Police Department, “with using his private security company to commit insurance fraud, tax evasion, wage theft, and about $18 million in money laundering.” The case against Foster is summarized in a press release that is … Read more

Polygraph Critic Doug Williams Completes Supervised Release

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On 25 September 2015, federal judge Vicki Miles-LaGrange sentenced Doug Williams, who pled guilty after he was entrapped in a federal sting operation called “Operation Lie Busters,” to two years of imprisonment to be followed by three years of supervised release “[u]pon release from imprisonment.” Williams had taught two undercover federal agents how to pass … Read more

TV Polygraph Operator Daniel Ribacoff Denies Falsely Branding Steve Wilkos Show Guest as a Liar, But Deletes Posts When Challenged

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Polygraph operator Daniel Ribacoff, who performs for the NBCUniversal Television Distribution syndicated daytime television talk program, The Steve Wilkos Show, has publicly denied having wrongly accused show guest Anca Pennington of lying. In an unaired segment recorded on 11 December 2019, Ribacoff accused Pennington of lying when she denied having burned her infant daughter with … Read more

Book Review: False Confessions: The True Story of Doug Williams and His Crusade Against the Polygraph Industry

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In 2012, former Oklahoma City Police Department polygraph operator-turned-critic Douglas Gene Williams published his autobiography under the title, From Cop to Crusader: My Fight Against the Dangerous Myth of “Lie Detection.” In 2014, he released a second edition, adding an account of the raid conducted by federal agents on his home and office as part … Read more

LAPD Polygraph Policy Documents Disclosed

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AntiPolygraph.org has obtained and published two previously unavailable Los Angeles Police Department (LAPD) polygraph unit policy documents. The LAPD Polygraph Unit Examiner Reference Guide dated November 2018 and marked “Law Enforcement Sensitive” includes rules for scoring polygraph charts as well as question sequences for the various polygraph techniques used by the LAPD polygraph unit, including … Read more

Wisconsin Court of Appeals Throws Out Post-Polygraph Confession on Grounds of Coercion

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In a 19 May 2020 ruling, the Wisconsin Court of Appeals upheld the suppression of a post-polygraph confession in the child molestation case of Wisconsin v. Adam W. Vice (2018AP2220-CR). In 2016, Vice was accused of sexually molesting a four-year-old girl. Questioned by Washburn County Sheriff’s Department investigator William Fisher, Vice “denied any wrongdoing and … Read more

NCCA Interview & Interrogation Manual

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The 1991 Department of Defense Polygraph Institute (DoDPI) interrogation manual, Interview & Interrogation (PDF) is among the first documents published by AntiPolygraph.org nearly 20 years ago. Since then, DoDPI has undergone two name changes and is now called the “National Center for Credibility Assessment” (NCCA). AntiPolygraph.org has obtained and now made available the November 2013 … Read more

Neither Tara Reade Nor Joe Biden Should Take a Polygraph “Test”

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In an interview with Tara Reade, who has accused Democratic presidential candidate Joe Biden of sexually assaulting her in 1993, Megyn Kelly asked Reade (at 37:37) if she would be willing to take a polygraph “test”: Kelly: If I can just go back for one second to Blasey Ford.Reade: Yes.Kelly: Because we mentioned her—Reade: Yes.Kelly: … Read more

“Green River Killer” Gary Leon Ridgway’s Polygraph Charts

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On Monday, 7 May 1984, polygraph operator Norman R. “Norm” Matzke of the King County, Washington Sheriff’s Office conducted a polygraph “test” of Gary Leon Ridgway regarding the deaths of prostitutes whose bodies had been dumped in or near the Green River beginning in 1982. After passing the polygraph, Ridgway, who had been arrested on … Read more