Speakers
Dr Ryan Botha
Parallel Workshops
This study evaluated the predictive accuracy of the Level of Service/Case Management Inventory (LS/CMI) in a sample of 772 men managed by the New Zealand Department of Corrections. Over a one-year follow-up, both domain and total LS/CMI scores showed moderate discriminative accuracy and added significant predictive value beyond a static risk measure for general and violent recidivism. No significant differences in discrimination or general recidivism rates were found between NZ Māori and NZ European subgroups, though calibration differences for violent recidivism likely reflected base rate disparities. Assessments conducted by psychologists demonstrated significantly higher predictive accuracy than those completed by group facilitators, highlighting the importance of assessor expertise. Overall, findings support the generalizability of the LS/CMI, including its applicability with Indigenous populations.
