The evaluation process used by the Central Intelligence Agency to assess the veracity of statements made by candidates, employees, and sources involves a psychophysiological detection of deception examination. This examination employs a device that measures and records several physiological responses such as heart rate, blood pressure, respiration, and skin conductivity while an individual answers a series of carefully constructed inquiries.
This component of the security clearance process is critical for identifying potential risks, ensuring national security, and maintaining the integrity of intelligence operations. Its historical development reflects an ongoing effort to refine methods for evaluating truthfulness and detecting deception in high-stakes environments, providing a crucial layer of defense against espionage and insider threats.