Verification of using radar vital sign monitors in deception tests (2023)

Abstract

This study examines the validity and accuracy of a typical radar-based vital signal monitoring system during spoken responses, a common and necessary scenario in deception tests. Traditional deception tests, such as polygraph tests, often involve testees wearing numerous electrodes, which can induce nervousness and affect their physiological measurements. Additionally, testers may be hindered by the potential Hawthorne effect caused by such varied measurements, while the movement and behavior of testees are typically restricted to ensure data validity. Based on the conclusive findings of this paper, practitioners can employ radar technology to non-invasively extract crucial vital signs during deception tests, ensuring validation. This approach enhances efficiency and affords greater flexibility to testers.