Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/302631 
Year of Publication: 
2024
Series/Report no.: 
IZA Discussion Papers No. 17114
Publisher: 
Institute of Labor Economics (IZA), Bonn
Abstract: 
Peer interactions play a key role in the criminal sector due to its secrecy and lack of formal institutions. A significant part of criminal peer exposure happens in prison, directly influenced by policymakers. This paper provides a broader understanding of how peer effects shape criminal behavior among prison inmates, focusing on co-inmate impacts on recidivism and criminal network formation. Using Norwegian register data on over 140,000 prison spells, we causally identify peer effects through within-prison variation in peers over time. Our analysis reveals several new insights. First, exposure to more experienced co-inmates increases recidivism. Second, exposure to "top criminals" (i.e. those with extreme levels of criminal experience) plays a distinctive role in shaping these recidivism patterns. Third, inmates form lasting criminal networks, as proxied by post-incarceration co-offending. Fourth, homophily intensifies these peer effects. These findings contribute to the theoretical understanding of peer influences in criminal activities and offer practical insights for reducing recidivism through strategic inmate grouping and prison management policies.
Subjects: 
prison inmates
incarceration
criminal behavior
criminal experi- ence
criminal networks
recidivism
JEL: 
K14
K42
Document Type: 
Working Paper

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