The Prison Project is a nationwide prospective cohort study examining the development of criminal behavior and other life circumstances before, during, and after detention in the Netherlands.
Methods
The target population of the study consisted of all men, aged 18–65 years, and born in the Netherlands, who entered pre-trial detention between October 2010 and April 2011. Participants were questioned repeatedly during detention and six and 24 months after release. Self-reported information on a variety of topics was collected at each measurement, including demographics, lifestyle, personality traits, self-control, attitudes towards criminal justice actors, experiences during detention, and different life domains (i.e., recidivism, employment, financial and housing situation, health, family situation, social networks). Moreover, detailed longitudinal information was gathered from different official registration systems.

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