Offenders with high levels of psychopathic traits present particular challenges to the criminal justice system. These offenders are at high risk of re-offending and have a range of complex issues impacting on their response to treatment. This paper outlines the development, structure and implementation of the Chromis programme: a programme designed specifically to reduce the risk of violence in offenders with high levels of psychopathic traits. It outlines the context in which the programme currently runs and the challenges faced in evaluating its impact. Initial findings and plans for evaluation are discussed. [read the full story here]