AQA Syllabus focus:
'Institutional aggression in prisons, including situational explanations.'
Situational explanations argue that prison aggression is mainly produced by the environment of the institution. Harsh conditions, reduced control, and constant stress can make violent behavior more likely among inmates.
What are situational explanations?
Situational explanations focus on features of the prison itself rather than on the personalities or backgrounds of individual prisoners. The basic argument is that aggression develops because prison life is restrictive, stressful, and sometimes threatening. When inmates must cope with loss, frustration, and danger every day, aggression can become a response to those pressures.
When psychologists discuss institutional aggression, they mean aggression that occurs within institutions such as prisons, including violence between inmates and aggression toward staff.
Institutional aggression is aggressive behavior that occurs within an institution, such as a prison, and is shaped by the social and physical environment of that setting.
A situational account therefore looks at prison rules, living conditions, levels of supervision, and relationships inside the institution. It suggests that aggression is not simply caused by the prisoner alone, but can be created or intensified by the prison environment.
The deprivation model
The main situational explanation is the deprivation model.
The deprivation model argues that aggression in prisons results from the “pains of imprisonment,” meaning the losses and restrictions imposed by prison life.
Sykes argued that imprisonment produces several forms of deprivation, and these can generate anger, stress, and conflict. Important deprivations include:
Loss of liberty: prisoners are removed from normal life and have little freedom of movement.
Loss of autonomy: daily routines, choices, and decisions are controlled by the institution.
Loss of goods and services: access to comfort, possessions, and pleasurable activities is limited.
Loss of security: prisoners may feel vulnerable to intimidation or attack from other inmates.
Loss of relationships: social and emotional contact with family or partners is restricted.
These pains of imprisonment may produce aggression in different ways. A prisoner who feels constantly controlled may become angry and react aggressively to staff authority. A prisoner who feels unsafe may use aggression defensively to protect status or avoid victimization. In this view, aggression is often an adaptation to the prison setting rather than just an individual tendency.
How prison situations increase aggression
Overcrowding and lack of privacy
Crowded prisons can increase tension because inmates have limited personal space and fewer opportunities to withdraw from conflict.

Photograph of an overcrowded prison dormitory-style housing area (multiple bunks in a shared space), illustrating reduced personal space and limited privacy. This kind of layout helps explain why crowding can increase tension and conflict: constant proximity makes avoidance and emotional cooling-off harder. Source
Noise, close contact, and competition for resources may all raise irritability. A lack of privacy can also make prisoners feel watched, disrespected, or unable to manage emotion calmly, increasing the risk of verbal and physical aggression.
Lack of control and meaningful activity
Aggression is also more likely when prisoners have little control over daily life. Strict routines and few meaningful choices may create helplessness and resentment. If inmates have very little to do, boredom can combine with frustration and make disputes escalate more easily. Situational explanations therefore link aggression to the structure of prison life, not just to isolated incidents.
Insecurity and survival
Some prison environments are unsafe or are seen as unsafe. In these settings, aggression may become a way of surviving. Prisoners may act tough, retaliate quickly, or join aggressive groups to avoid looking weak. This means violence can be encouraged by the institution when formal control is weak and inmates believe they must protect themselves.
Staff-prisoner relationships
The way prisons are run also matters. If staff are inconsistent, overly harsh, or seen as unfair, inmates may react with hostility. Poor communication can increase mistrust, while confrontational management styles may turn minor incidents into aggressive encounters. Situational explanations emphasize that prison aggression can reflect the social climate created by the institution.
Evidence and evaluation
Research has provided support for situational explanations. For example, studies of prison environments have found higher aggression in institutions marked by overcrowding, limited privacy, and few constructive activities. McCorkle et al. reported that violence was more common where inmates lacked personal space, meaningful programs, and opportunities for movement.

Forest plot showing how estimated prevalence of assaults changes across years with different levels of overcrowding (and turnover) in a pre-trial prison sample. It’s a useful visual example of evidence for situational explanations: when an environmental pressure (crowding) increases, measured violence tends to rise alongside it. Source
This supports the idea that aggression is shaped by prison conditions.
A major strength of situational explanations is their practical value. If aggression is partly caused by the environment, institutions can reduce it by changing conditions. Improvements such as reducing crowding, increasing access to work or education, improving staff training, and creating safer living arrangements may lower aggression. This makes the explanation useful for prison management and reform.
However, evidence is not always straightforward. Much prison research is correlational, so it can show an association between poor conditions and aggression but cannot prove that one directly causes the other. For example, a prison with high aggression might become more restrictive in response, which makes cause and effect difficult to separate.
Situational explanations can also be criticized for being incomplete. Not every inmate in the same prison becomes aggressive, even when exposed to the same conditions. This suggests that institutional factors are important, but they may not explain all cases of prison violence on their own.
Another issue is measurement. Official records may underestimate aggression because some threats, bullying, or minor assaults are never reported. If aggression is hidden, researchers may not fully capture how strongly prison conditions affect behavior. Even so, the consistent finding that aggression varies between institutions supports the view that features of the prison environment play a significant role.
Practice Questions
Outline one situational explanation of institutional aggression in prisons. (2 marks)
1 mark for identifying that aggression is explained by the prison environment or the deprivation model.
1 mark for elaboration, for example that aggression results from the pains of imprisonment such as loss of autonomy, overcrowding, lack of privacy, or insecurity.
Discuss situational explanations of institutional aggression in prisons. (6 marks)
AO1: 1 mark for each relevant knowledge point, up to 4 marks.
AO3: 1 mark for each relevant evaluation point, up to 2 marks.
Possible AO1 content:
Aggression is explained by features of the institution rather than by the prisoner alone.
The deprivation model states that prison creates aggression through the pains of imprisonment.
Relevant deprivations include loss of liberty, loss of autonomy, lack of goods and services, insecurity, and restricted relationships.
These conditions may produce anger, stress, boredom, self-protective violence, and conflict with staff or other inmates.
Possible AO3 content:
Research support comes from studies linking overcrowding, reduced privacy, and limited activity to higher aggression, such as McCorkle et al.
The explanation has practical applications because changing prison conditions may reduce violence.
A limitation is that much evidence is correlational, so causation is hard to establish.
A limitation is that the same prison conditions do not make every inmate aggressive.
FAQ
The first days in custody can be highly unstable because everything is unfamiliar and status is uncertain.
New prisoners may not understand informal prison rules.
They may feel pressure to appear strong very quickly.
Some are dealing with withdrawal, sleep loss, or acute stress.
Early misunderstandings can escalate before routines are established.
This means aggression risk may be especially high during intake and transfer periods.
Physical design can shape where conflict starts and how easily it spreads.
Blind spots make supervision harder.
Narrow corridors and bottlenecks increase forced contact.
Large, noisy communal areas can raise tension.
Poor access to outdoor space may increase frustration.
Single cells may reduce some conflicts, while open dorms can increase exposure to threats.
Design does not determine aggression by itself, but it can raise or lower everyday pressure.
Procedural justice means that rules are applied fairly, consistently, and respectfully.
When inmates believe staff decisions are predictable and legitimate, they are more likely to comply without confrontation. If they see punishment as arbitrary or humiliating, resentment can build.
Important features include:
explaining decisions clearly
treating prisoners with dignity
applying rules consistently
allowing prisoners to be heard
This can reduce aggressive reactions even when prison restrictions remain in place.
Recorded assaults capture only part of the problem.
Some victims do not report incidents because they fear retaliation.
Staff may classify events differently across institutions.
Verbal threats, intimidation, and coercion may not be logged as assaults.
Minor incidents may be handled informally and never enter official data.
Because of this, researchers often combine official records with observations, interviews, or self-report measures to get a fuller picture.
Not every intervention requires major rebuilding or large budgets.
Examples include:
more predictable daily routines
faster responses to minor disputes
better staff communication training
staggered movement times to reduce crowding at flashpoints
increased access to structured activities
clearer complaint procedures
Small changes can matter because they reduce uncertainty, boredom, and perceived unfairness, which are common situational triggers for aggression.
