Expert guide to comparison questions in CQT polygraph testing: how they work, their history from Reid's 1947 breakthrough, and what peer-reviewed research confirms about…
Read Article →John Furedy's decades of CQT research at the University of Toronto raised methodological standards in polygraph science and shaped international legal discourse.
Read Article →How the Arther-Backster rivalry over polygraph methodology in the 1960s-70s fragmented the profession and drove the push toward modern standardization.
Read Article →In 1947, John E. Reid invented the Control Question Technique, transforming polygraph testing into the structured, internally controlled diagnostic tool used worldwide today.
Read Article →Explore the 1960s polygraph revolution: Jack Ruby's Warren Commission test, Backster's Zone Comparison Technique, Vietnam deployment, and corporate screening expansion.
Read Article →Discover how the Control Question Technique evolved from Reid's 1947 innovation through Backster's Zone Comparison standardization to become polygraph's most-used method.
Read Article →Discover how Backster's Either-Or Rule revolutionized polygraph scoring with a binary comparison model that increased correct decisions from 70% to 80%.
Read Article →Explore the complete history of lie detection — from ancient rice trials to modern digital polygraph systems. Key inventors, legal milestones & science explained.
Read Article →Master every polygraph questioning method: CQT, RIT, DLT, and GKT explained with accuracy data, historical context, and expert insights for examiners and examinees.
Read Article →Complete examiner guide to the Directed Lie Screening Test (DLST): administration protocols, question formulation, ESS scoring, and research-backed best practices.
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