Crime Reduction and the Length of Prison Sentences

The issue discussed is whether policies of imposing increasingly lengthy prison sentences on serious criminal offenders reduce crime. The empirical evidence for the deterrence and incapacitation effects of incarceration is first examined and found to be of limited help in answering the question whether lengthy prison sentences reduce crime. Conceptual and normative analysis of deterrence and incapacitation suggest that we have little reason to believe that the general use of lengthy prison terms produces more good than harm for society, especially if the burdens of and alternatives to such prison terms are taken into account.