Ministry of Justice

Predicting and understanding risk of re-offending: the Prisoner Cohort Study

Date: 18 October 2007

Inside a prison

Research summary on predicting and understanding the risk of re-offending of prisoners with dangerous and severe personality disorder.


The Prisoner Cohort Study examined: the predictive accuracy of established risk assessment instruments for violent offenders; the prevalence of offenders potentially classifiable as dangerous and severely personality disordered (DSPD); their reconvictions after release; the element of risk attributable to DSPD; the likely relationship between DSPD and indeterminate sentences.