These inquiries are a component of the pre-employment screening and internal investigation processes utilized by law enforcement agencies. They aim to assess the truthfulness of candidates or officers regarding sensitive topics, such as past criminal activity, substance abuse, and integrity. The instrument measures physiological responses like heart rate, blood pressure, respiration, and skin conductivity while the individual answers a series of questions.
Their significance stems from the need to ensure the honesty and ethical conduct of those entrusted with upholding the law. A thorough vetting process, incorporating this technique, can help identify individuals who may be prone to corruption, abuse of power, or other forms of misconduct. Historically, the utilization of this method has evolved as a tool to maintain public trust and confidence in law enforcement. While controversial and not always admissible in court, it serves as an investigative aid.