What is the main role of deception detection in interrogations?

The main role of deception detection in interrogations is to identify inconsistencies indicating dishonesty. This involves assessing verbal and non-verbal cues that may suggest a subject is not being truthful. By recognizing these inconsistencies, interrogators can probe deeper into the subject's responses, encouraging them to provide more accurate information or clarify contradictions in their statements. This process is fundamental to unraveling the truth and can significantly impact the overall success of an interrogation.

While gathering evidence legally, improving interviewing techniques, and evaluating the effectiveness of interrogation are vital components of the broader interrogation process, they do not specifically define the function of deception detection as accurately as the ability to identify dishonesty. Focusing on inconsistencies allows interrogators to better understand the subject's credibility and the reliability of the information being provided, making it a crucial element in the investigative process.