Drennan's Law is a principle in the field of sociology that suggests that the likelihood of a person engaging in deviant behavior increases when they are in a group setting. This law highlights how social dynamics can influence individual actions, often leading to behaviors that one might not exhibit alone. The law is named after Dr. John Drennan, who studied group behavior and its effects on personal decision-making. It emphasizes the importance of understanding social contexts when analyzing why individuals may act differently in groups compared to when they are alone.