sentences:  If the sender repeats the same tactic, the receiver will become more aware that the sender is lying.Emotion plays a central role in IDT as a motivation and result of deception.Emotion can motivate deception, with the sender relying on relevant knowledge (informational, relational and behavioral familiarity) to achieve goals such as self-gratification, avoiding a negative emotional outcome or creating a negative emotional outcome for the target of deception.