Ethicists use the term "theory of punishment" to refer to an attempt to answer the following question(s):

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What are the main factors that motivate people to commit crimes? Does punishment deter or encourage crime?

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When is it morally justified to punish an offender, and how should offenders be punished for particular offences?

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Why do all human societies utilise methods of punishment? What evolutionary purpose does punishment serve?

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Which methods of punishment are most successful in deterring and preventing crime, and why?

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