Dealing with Offending: Custodial Sentencing & Recidivism

Custodial sentencing — imprisonment — is the most severe form of punishment available in the criminal justice system. It involves the physical detention of offenders in prisons or other secure institutions. Understanding the psychological effects of custody, the aims of sentencing, and the effectiveness of imprisonment in reducing reoffending (recidivism) is a key part of the AQA A-Level Psychology forensic psychology specification.

Key Definition: Recidivism is the tendency of a convicted criminal to reoffend after being released from custody. It is typically measured as the percentage of offenders who commit a new offence within a set period (usually one or two years) after release.

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Aims of Custodial Sentencing

Custodial sentences serve several purposes, which can be broadly categorised as follows:

Aim	Description	Example
Deterrence	Discouraging the offender (individual deterrence) and others (general deterrence) from committing crimes through the threat of punishment	A long prison sentence for a violent crime may discourage others from committing similar offences
Incapacitation	Protecting the public by physically removing the offender from society so they cannot commit further crimes during the sentence	A dangerous offender is imprisoned to prevent them from harming others
Retribution	Society's way of "getting even" — the offender deserves punishment proportionate to the crime committed	A life sentence for murder reflects the seriousness of the offence
Rehabilitation	Reforming the offender through education, therapy, and skills training so they are less likely to reoffend upon release	Offenders attend anger management or drug rehabilitation programmes in prison

Exam Tip: Exam questions may ask you to discuss whether custody is effective. A strong answer will note that these four aims can conflict — for example, a focus on retribution (long sentences) may undermine rehabilitation (which requires resources and support rather than just punishment).

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Psychological Effects of Imprisonment

Institutionalisation

Long-term imprisonment can lead to institutionalisation — a state in which offenders become so dependent on the highly structured prison regime that they lose the ability to function independently in the outside world. Institutionalised individuals may:

• Struggle with decision-making (having had all decisions made for them in prison)
• Find it difficult to manage daily tasks (cooking, budgeting, using public transport)
• Experience anxiety in open, unstructured environments
• Prefer to return to prison, where life is predictable

Prisonisation — Wheeler (1961)

Wheeler (1961) found a U-shaped pattern of conformity to prison norms (prisonisation):

• Inmates initially conformed to prison norms when they first arrived
• In the middle of their sentence, they showed the highest levels of conformity to the informal "inmate code" (loyalty to other inmates, hostility towards staff)
• Towards the end of their sentence, as release approached, they gradually returned to conforming with conventional societal norms

This suggests that the prison environment exerts a powerful situational influence on behaviour, but that this influence is not permanent.

Depression, Self-Harm, and Suicide

Imprisonment is associated with significantly elevated rates of:

• Depression — the loss of freedom, family contact, autonomy, and identity contributes to depressive symptoms
• Self-harm — rates of self-harm in UK prisons are substantially higher than in the general population
• Suicide — the prison suicide rate in England and Wales is approximately 5–6 times higher than in the general population

Loss of Identity

Goffman (1961) described prisons as "total institutions" — environments that strip individuals of their personal identity through uniform clothing, assigned numbers, fixed routines, and loss of personal possessions. This process of mortification can damage self-concept and make reintegration into society more difficult.

The Stanford Prison Experiment — Haney, Banks & Zimbardo (1973)

Haney et al. (1973) (the Stanford Prison Experiment) demonstrated the powerful effect of the prison environment on behaviour. Student volunteers randomly assigned to the role of "guard" quickly became authoritarian, aggressive, and cruel, while those assigned to be "prisoners" became passive, distressed, and showed signs of emotional breakdown. The study had to be stopped after 6 days instead of the planned 14.