March 27, 2026
Spontaneous Fluctuation Rate in Polygraph Testing
Learn what spontaneous fluctuation rate means in polygraph testing, how examiners distinguish random EDA noise from genuine responses, and why it matters.
Read Article →LDTTag: <span>galvanic skin response</span>
Tag: <span>galvanic skin response</span>
March 27, 2026
Psychophysiological Basis of the CQT Polygraph Technique
Explore the psychophysiological science behind the CQT polygraph: differential salience, ANS responses, three measurement channels, and 89% mean accuracy confirmed by APA meta-analyses.
Read Article →March 27, 2026
Autonomic Nervous System & Polygraph: How ANS Powers Testing
Learn how the autonomic nervous system drives polygraph testing — from fight-or-flight responses to EDA, cardiovascular, and respiratory channels measured during examinations.
Read Article →March 27, 2026
Suppression Response in Polygraph: Channel Guide
Learn how suppression responses across respiratory, electrodermal, and cardiovascular channels help polygraph examiners detect deception in chart analysis.
Read Article →March 27, 2026
What Is Electrodermal Activity (EDA)? Plain-Language Guide
Learn what electrodermal activity (EDA) is, how polygraph finger sensors measure skin conductance, and why EDA is the most diagnostically valuable polygraph channel.
Read Article →March 27, 2026
Galvanic Skin Response (GSR) in Polygraph Testing
Discover how galvanic skin response (GSR) works in polygraph testing — the science of electrodermal activity, how sensors measure sweat gland changes, and why…
Read Article →March 26, 2026
Joseph Kubis: Fordham’s Polygraph Validity Pioneer
Joseph Kubis of Fordham University pioneered controlled polygraph accuracy research in 1962. His Air Force-funded studies on examiner training and physiological channels shaped modern…
Read Article →March 26, 2026
Carl Jung & Word Association: The Test That Inspired Polygraph
Discover how Carl Jung's word association test and galvanometer experiments at the Burghölzli clinic created the scientific foundation for modern polygraph testing.
Read Article →March 26, 2026
Psychogalvanometer & Polygraph History: GSR Origins 1888–1940
From Féré's 1888 discovery to Keeler's 1938 three-channel polygraph: how the psychogalvanometer became the electrodermal activity sensor in every modern lie detector.
Read Article →March 26, 2026
Harold Burtt: Ohio State’s Polygraph Pioneer & Researcher
Harold Burtt's controlled deception experiments at Ohio State University in the 1920s helped establish the empirical foundation of modern polygraph science.
Read Article →March 26, 2026
Polygraph Sensor Technology: How Modern Components Are Built
Explore the engineering behind every polygraph sensor — pneumograph tubes, EDA electrodes, cardiosphygmograph cuffs, and plethysmograph components explained.
Read Article →March 7, 2026
Electrodermal Activity (EDA) in Polygraph Testing: Science Guide
Comprehensive guide to electrodermal activity (EDA) in polygraph testing — covering skin conductance science, measurement methods, scoring systems, and modern instrumentation.
Read Article →March 5, 2026
Psychological & Physiological Foundations of Polygraph Testing
Explore the science behind polygraph testing: cognitive load theory, the autonomic nervous system, and the three physiological channels that make deception detection possible.
Read Article →February 24, 2026
Polygraph Testing at Home: Why Location Matters
Polygraph home testing compromises accuracy. Learn why APA standards require controlled environments and how noise, temperature, and third-party presence undermine results.
Read Article →December 24, 2025
The Psychogalvanometer: Skin Conductance & Lie Detection
Discover how the psychogalvanometer measures skin conductance changes caused by emotional arousal — and why EDA is a core channel in every modern polygraph.
Read Article →December 23, 2025
The Emotograph: Keeler’s Polygraph Breakthrough of 1924
Discover how Leonarde Keeler's Emotograph revolutionized lie detection in the 1920s, replacing cumbersome smoked-paper polygraphs with a portable ink-pen system.
Read Article →September 25, 2025
Understanding the Polygraph Chart: How to Read Lie Detector Data
Learn how professional polygraph examiners read and interpret polygraph charts — including all channels, scoring systems, and computer algorithms used in modern lie detection.
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