Specific deterrence prevents crime by frightening an individual defendant with punishment. ... Incapacitation prevents crime by removing a defendant from society. Rehabilitation prevents crime by altering a defendant's behavior. Retribution prevents crime by giving victims or society a feeling of avengement.

Why is punishment needed in society?

There are six recognised aims of punishment: protection - punishment should protect society from the criminal and the criminal from themselves. retribution - punishment should make the criminal pay for what they have done wrong. reparation - punishment should compensate the victim(s) of a crime.

Why punishment is necessary in terms of crimes?

Justifications for punishment include retribution, deterrence, rehabilitation, and incapacitation. The last could include such measures as isolation, in order to prevent the wrongdoer's having contact with potential victims, or the removal of a hand in order to make theft more difficult.