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Related Experiment Video

Updated: Dec 28, 2025

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
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Do Overcrowding and Turnover Cause Violence in Prison?

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Prison violence increases with overcrowding and staff turnover. Reducing these institutional factors is critical for prisoner safety and rehabilitation efforts.

Keywords:
forensichealth policyinstitutional factormisconductprisonpublic health

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Area of Science:

  • Criminology
  • Penal System Studies
  • Public Health

Background:

  • Individual risk factors for prison violence are well-established.
  • Evidence linking institutional factors like overcrowding and turnover to prison violence is mixed.
  • Previous research has questioned the relevance of these institutional factors.

Purpose of the Study:

  • To investigate the association between prison violence and institutional factors.
  • To examine the impact of overcrowding and turnover on violence in a Swiss pre-trial prison.
  • To provide evidence on the role of the prison environment in inmate safety.

Main Methods:

  • Data collected from a Swiss pre-trial prison between 2013 and 2018.
  • Violence measured by assaults requiring immediate medical attention.
  • Meta-regression analysis used to assess overcrowding and turnover rates.

Main Results:

  • A significant positive association was found between prison violence and increased overcrowding.
  • Higher turnover rates were also correlated with increased levels of prison violence.
  • Institutional factors demonstrably impact the prevalence of violence within prisons.

Conclusions:

  • Institutional factors, specifically overcrowding and turnover, have a detrimental effect on prison life.
  • Reducing overcrowding and turnover is essential for enhancing prisoner safety and reducing vulnerability.
  • Addressing these systemic issues is crucial for creating correctional facilities that promote desistance.