The ImportationModel argues that prison inmates bring with them, from the outside world, a subculture typical of criminality.
This includes beliefs,values, norms, attitudes and a history of learning experiences as well as other personal characteristics such as gender, race and class.
The willingness of inmates to use violence inside prison to settle disputes reflected their lives before they were imprisoned. They will have high self-efficacy and a tendency to react aggressively.
Aggression is a means of negotiating their way through the unfamiliar and frightening prison environment in which existing inmates use aggression to establish power, status and influence and access to resources.
Aggression is also influenced by prison regime. It is unpredictable and regular use of 'lock ups' to control behaviour creates frustration and reduces access to interesting activities like TV and exercise.
Studied 813 juvenile delinquents confined in institutions in California.
These were inmates who bought into confinement several negativedispositional features such as experiences of childhood trauma, high levels of anger and irritability, a history of substance abuse, and a history of violent behaviour.
These inmates were more likely to engage in suicidalactivity and sexual misconduct and committed more acts of physicalviolence that were brought to the attention of the parole board.
- compares with a control group of inmates with fewer negativedispositional features
Suggested the importation model is a better explanation of violence between inmates, and the deprivation model is more useful in understanding aggression against prison staff.
Inmates entering prison for the first time suffer deprivation but that doesn't necessarily lead to violence unless or until it combines with individual characteristics imported into the prison by inmates which influences prison culture.
Imported characteristics - the personal characteristics of men who are violent in prison
Imported characteristics associated with prison violence include history of earlier violence in prison or with violent convictions, low self-control, anger, mentalhealth problems, antisocial attitudes or personality.
Prison environment - physically poor conditions, highly controllingregimes, or circumstances in which rules are unevenly applied or where prisoners don't see staff decisions as fair or legitimate.
Crowding as a direct cause of violence was fairly weak.
Research suggested that the effects of crowding are mediated through staff-prisoner interactions and that the crucial factor in maintaining order is the availability and the skills of unit staff.
There are practical applications in our understanding that the prison environment can lead to aggression.
Wilson set up 2 units in HMP Woodhill where the overcrowding was reduced, music was introduced to reduce noisy conditions, and the temperature was carefully controlled.
He found that initiating these conditions was a successful way to lower levels of aggression.