Deception detection refers to the process of identifying whether someone is being dishonest or misleading. This can involve analyzing verbal and non-verbal cues, such as body language, facial expressions, and speech patterns. Techniques used in deception detection can range from psychological assessments to advanced technologies like polygraphs and voice stress analysis. In various fields, including law enforcement, psychology, and security, professionals employ different methods to assess truthfulness. Research in this area aims to improve accuracy in identifying deception, which can be crucial in situations like criminal investigations, job interviews, and even everyday interactions.