Which concept explains the phenomenon where a label attached to an individual leads to further deviant behavior?

The concept that best explains the phenomenon where a label attached to an individual leads to further deviant behavior is secondary deviance. This term describes a situation in which the initial act of deviance is labeled by society, and as a result, the individual internalizes this label, leading them to engage in more deviant behavior. Essentially, when labeled, individuals may see themselves through the lens of this label and conform to the expectations associated with it, which can perpetuate a cycle of deviance.

For example, if a person is labeled as a "criminal," they may begin to identify with that label and embrace behaviors aligned with it, resulting in further acts that society deems deviant. This concept highlights the impact of social labels and the role they play in shaping individuals' identities and behaviors over time.