April 6, 2026
Polygraph Testing Procedure: Complete Four-Phase Breakdown
A complete guide to all four phases of a professional polygraph examination: pre-test interview, chart collection, post-test analysis, and follow-up.
Read Article →LDTTag: <span>control question test</span>
Tag: <span>control question test</span>
March 27, 2026
What Is the Directed Lie Test (DLT)? Complete Guide
Learn how the Directed Lie Test (DLT) works, why federal agencies prefer it, and what to expect. The most transparent polygraph comparison question format.
Read Article →March 26, 2026
William Iacono: Minnesota’s Polygraph Science Pioneer
William G. Iacono's psychophysiology research at the University of Minnesota shaped how science evaluates polygraph testing over three decades.
Read Article →March 26, 2026
David Lykken: The Scientist Who Challenged Polygraph Testing
David Lykken's four-decade career at the University of Minnesota produced groundbreaking critiques that drove improvements in polygraph methodology, testing standards, and scientific rigor.
Read Article →March 26, 2026
Reid & Inbau: The Partnership That Defined Interrogation
How Reid and Inbau combined polygraph expertise with legal authority to create America's dominant interrogation framework, training over 500,000 officers.
Read Article →March 26, 2026
Minnesota’s Polygraph Science Innovators: The CQT Debate
How University of Minnesota researchers and their peers applied laboratory rigor to polygraph science, shaping the CQT validity debate and federal policy.
Read Article →March 26, 2026
History of the Zone Comparison Test: Reid’s 1947 Innovation
Explore the full history of the Zone Comparison Test from Reid's 1947 breakthrough through Backster's scoring system to modern computerized variants used globally.
Read Article →February 16, 2026
Minimizing False Positives & Negatives in Polygraph Testing
Learn APA-approved strategies for minimizing false positives and false negatives in polygraph testing, from pretest interviews to validated scoring systems.
Read Article →August 8, 2025
Polygraph in German Law: Legal Status & Court Rulings
Germany's polygraph ban spans 70+ years of BGH rulings. Explore constitutional barriers, the 1998 scientific shift, and emerging lower court exceptions.
Read Article →April 29, 2025
Directed Lie Screening Test (DLST): Polygraph Method Guide
Complete guide to the Directed Lie Screening Test (DLST) — the validated polygraph screening format with 90% ESS accuracy for law enforcement and PCSOT…
Read Article →March 26, 2025
Utah CQT Polygraph Technique: Complete Examiner Guide
Complete examiner guide to the Utah CQT polygraph technique — covering question formulation, acquaintance testing, numerical scoring, and data analysis.
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