Updated Law Enforcement Polygraph Handbook

Polygraph Law Enforcement Accreditation

In 2011, AntiPolygraph.org reported that a consortium of federal, state, and local law enforcement agencies had created a “Polygraph Law Enforcement Accreditation” (PLEA) program and had in 2010 promulgated a 65-page “Polygraph Guide for Standards and Practices,” a copy of which we obtained and published (1.9 MB PDF).

The PLEA consortium continues to function and by 2018 included the Greenville, South Carolina Police Department, the Houston Police Department, the Los Angeles Police Department, the North Carolina Bureau of Investigations, the Pennsylvania State Police, the Virginia State Police, and a federal representative from the National Center for Credibility Assessment.

AntiPolygraph.org has obtained a newer, 78-page copy (1 MB PDF) of the PLEA Polygraph Guide for Standards and Practices dated 25 October 2018. Like the 2010 edition, it is marked “Law Enforcement Sensitive” on each page, with an additional caveat: “Do Not Copy.” Oh well.

The 2018 edition of the guide includes three new chapters covering, respectively, the Directed Lie Comparison Test (Ch. 11), the Directed Lie Screening Test (Ch. 12), and the Concealed Information Test (Ch. 13).