Deception detection is the study of methods and techniques used to determine whether a person is being truthful or deceptive in their communication or behavior. This research area encompasses a variety of disciplines such as psychology, linguistics, and behavioral analysis, and seeks to develop reliable and accurate methods for identifying deception. Techniques used in deception detection may include analyzing verbal and nonverbal cues, physiological responses, and cognitive processes to identify signs of deception. The ultimate goal of this research is to develop tools and strategies that can be used in various contexts such as law enforcement, intelligence gathering, and interpersonal communication to accurately detect deception and improve decision-making.