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Home / World / US Department of Homeland Security Implements Polygraph Testing

US Department of Homeland Security Implements Polygraph Testing

US Department of Homeland Security Implements Polygraph Testing
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World March 9, 2025 11:18

united states - Latest news on US Department of Homeland Security using polygraph for leak detection. Details on polygraph, its history, and controversy.

US Department of Homeland Security Utilizes Polygraph Testing

The US Department of Homeland Security (DHS) has started using polygraph tests to identify leakers within its ranks. The move comes in response to information leaks regarding its operations targeting irregular migrants.

Details on Polygraph Testing

  • Polygraph, commonly known as a 'lie detector,' measures physiological responses to assess truthfulness or deception.
  • During the test, reactions such as heart rate, blood pressure, respiration, and sweating are recorded.

Identification of Information Leakers

Secretary Kristi Noem disclosed that two individuals leaking information have been identified and could face up to 10 years in prison.

History of the Polygraph

  • Italian scientist Cesare Lombroso proposed the concept in 1881, followed by developments by psychologists and scientists over the years.
  • Canadian John Larson invented the first polygraph machine in 1921, with subsequent enhancements by American scientist Leonarde Keeler in 1935.

Controversy and Use

While polygraph tests are utilized in security investigations and employment screenings, their scientific validity remains debated due to factors like stress influencing results.

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