Incapacitation (law)

Incapacitation in the context of sentencing philosophy is the effect of a sentence in positively preventing (rather than merely deterring) future offending.

Imprisonment incapacitates the prisoner by physically removing them from the society against which they are deemed to have offended. Long term imprisonment with the intention to incapacitate is often used by criminal justice systems against habitual criminals who recidivate. Therefore, incapacitation focuses on removing the ability of the offenders to commit future crimes by use of imprisonment rather than focusing on rehabilitation or prevention.

In his 2004 article, Steven Levitt attributes part of the decline in the crime rate seen beginning in the mid-1990s to the inability of inmates to recidivate as sentences for crimes, especially for repeat offenders, had been greatly increased. Examples of these laws include back-to-back life sentences, three-strikes sentencing, and other habitual offender laws. In the United States, 18 U.S.C. § 3553 states that one of the purposes of criminal sentencing is to "protect the public from further crimes of the defendant". Quite simply, those incarcerated cannot commit further crimes against society.

Most of the justification for the continued high levels of those in prison in the United States is due to the incapacitation effect. In the 1970s, the strong emphasis on rehabilitation that had existed since the turn of the century gave way first to a focus on equality and fairness in sentencing, and then to an increased focus on incapacitation, deterrence and restraint strategies of crime prevention.

However, the increase in the number of persons incarcerated has greatly increased due to the implementation of this concept. For the 30 years prior to 1974, the average number or persons incarcerated was 103 per 100,000. This number had climbed to 600 per 100,000 by 1995.

The effect of incapacitation often has the unintended effect of incarceration of inmates' families

MacKenzie found that incapacitating offenders who continue to commit crimes at high rates is effective, it works best as a part of a multi-tiered approach

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