WIU: Inside the System, An LEJA Podcast

WIU Inside the System | EP 15: Real Polygraph Test: How Lie Detector Tests Actually Work

39 min · 10. apr. 2026
episode WIU Inside the System | EP 15: Real Polygraph Test: How Lie Detector Tests Actually Work cover

Beskrivelse

Welcome to WIU: Inside the System, presented by Western Illinois University’s School of Law Enforcement and Justice Administration (LEJA).In this installment Associate Professor David Young shows us how a real polygraph test works in law enforcement. In this episode, we take you inside an actual polygraph examination and break down the science behind lie detector tests.Watch as a subject undergoes a real polygraph, and learn how investigators analyze physiological responses like heart rate, breathing, and skin conductivity to detect deception.Polygraphs are widely used in criminal investigations, background checks, and federal hiring—but how accurate are they really? This epsidoe explores the truth behind one of the most debated tools in modern policing.

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episode WIU Inside the System | EP 15: Real Polygraph Test: How Lie Detector Tests Actually Work cover

WIU Inside the System | EP 15: Real Polygraph Test: How Lie Detector Tests Actually Work

Welcome to WIU: Inside the System, presented by Western Illinois University’s School of Law Enforcement and Justice Administration (LEJA).In this installment Associate Professor David Young shows us how a real polygraph test works in law enforcement. In this episode, we take you inside an actual polygraph examination and break down the science behind lie detector tests.Watch as a subject undergoes a real polygraph, and learn how investigators analyze physiological responses like heart rate, breathing, and skin conductivity to detect deception.Polygraphs are widely used in criminal investigations, background checks, and federal hiring—but how accurate are they really? This epsidoe explores the truth behind one of the most debated tools in modern policing.

10. apr. 202639 min