Deception Detection Techniques: Polygraph Examination and Eye-Tracking Technology Explained

Technical aid use for the detection of deception X2

Computer voice stress analysis / polygraph

1. Polygraph Examination – Polygraph examination, which is also known as a lie detector test, is a commonly used technical aid for detecting deception. The exam involves instrumentally monitoring physiological responses of the candidate, such as heart rate, blood pressure, respiration, and skin conductance. These responses are analyzed and interpreted to determine if the candidate is lying or telling the truth.

Polygraph testing is widely used in the fields of law enforcement, intelligence agencies, and security to identify deception in criminal cases or during background checks. However, polygraph tests are often criticized as not being completely reliable or accurate, and the results can be influenced by various factors such as the candidate’s emotional state or the examiners’ interpretation.

2. Eye-tracking Technology – Eye-tracking technology is another technical aid that can be employed to detect deception. Eye-tracking makes use of infrared cameras that track and record the eye movement of the individual to determine if he or she is lying. The eye-tracking technology operates on the premise that when a person looks at a deceptive object, they spend more time looking at it because they are evaluating it more carefully.

Furthermore, the technology can also monitor the dilated pupils, saccades, and fixations to determine whether a person is telling the truth or being deceitful. Eye-tracking is primarily used in fields like market research and consumer behavior analysis. It can also be helpful in judicial settings to assist interrogators by directing their focus to suspicious areas to improve their inquiries. However, it is important to note that strict criteria must be established for the effectiveness of these methods, and individuals must be monitored to prevent faulty reporting.

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