Lie Detectors: The Science, Technology, and Ethical Debate
Lie Detectors: The Science, Technology, and Ethical Debate Introduction Lie detection has long fascinated humanity, from ancient methods like trial by ordeal to modern polygraphs and AI-driven deception analysis. As technology advances, so do the ethical, scientific, and practical implications of lie detectors in criminal justice, workplace monitoring, and national security. What is a Lie Detector? A lie detector, or polygraph, is a device designed to measure physiological responses such as heart rate, blood pressure, respiration, and skin conductivity to detect deception. The assumption is that when a person lies, involuntary physiological changes occur, which the polygraph records. How Does a Polygraph Work? A traditional polygraph test includes the following steps: Pre-Test Phase: The examiner explains the procedure and asks control questions to establish baseline readings. Data Collection: Electrodes are placed on the subject to measure physiological responses while answeri...