Travis Hirschi is an American sociologist best known for his work in criminology. He developed the Social Bond Theory, which suggests that strong social bonds with family, friends, and community can prevent individuals from engaging in criminal behavior. His research emphasizes the importance of attachment, commitment, involvement, and belief in societal norms. Hirschi's influential book, Causes of Delinquency, published in 1969, laid the foundation for understanding juvenile delinquency. His theories have significantly impacted the fields of sociology and criminal justice, shaping policies aimed at reducing crime through community engagement and strengthening social ties.