Which theory that references "conduct norms" was formulated by criminologist Thorsten Sellin?

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Culture conflict theory, formulated by Thorsten Sellin, emphasizes the role of conduct norms, which are rules governing the proper behavior within a society. Sellin argued that conflicts arise when individuals from different cultural backgrounds, each with their own set of conduct norms, come into contact, leading to misunderstandings and potentially criminal behavior. This theory highlights how cultural diversity can lead to conflict within societies, especially when there is a lack of understanding or acceptance of differing norms.

Which Theory That References "Conduct Norms" Was Formulated by Criminologist