This comprehensive examination of the effectiveness of prisons is virtually alone in showing that prisons are moderately effective in achieving specific and general deterrence and collective and selective incapacitation. Wright provides evidence which defends prisons as important social institutions and argues that noninterventionist alternative measures are less likely to prevent crime than conventional imprisonment policies. He also offers sentencing recommendations that may maximize the effectiveness of prisons as agents of social control. This up-to-date assessment is required reading for students, teachers, policymakers, and practitioners in corrections, penology, and criminal justice.