Dr. Karl Hanson – Prediction Statistics for Risk Tools for Crime and Violence
This workshop provides training on the statistics used to evaluate the risk prediction tools now commonly used in corrections and forensic mental health. It is intended for individuals who use, or are considering using, risk assessment tools in their applied practice. Only basic knowledge of statistics is presumed (e.g., means, SD). Participants will learn the basic concepts required to evaluate risk tools, including the distinction between diagnostic and prognostic statistics, discrimination, and calibration. Most of the workshop will involve working through a series of exercises that demonstrate the strengths and weaknesses of specific evaluation methods, such as the fourfold table, AUC’s, Cohen’s d, the E/O index, logistic regression, and calibration plots. Bring a calculator.
Workshops are available for an additional fee and only offered in-person.