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Washington State Institute for Public Policy

Validation of the Washington ONE Dynamic Risk Assessment

In 2021, WSIPP’s Board of Directors approved a contract with the Department of Corrections (DOC) to validate the DOC’s Washington ONE dynamic risk assessment instrument. The purpose of the study is to examine different components of the Washington ONE and to validate the predictive validity of the instrument for demographic subgroups. The study will assess the relative frequency of risk level classifications for the incarcerated populations, the distributions of actual risk scores, varying risk and need characteristics by risk group, and the probability of recidivism by risk level classification. The analyses will examine differences in the outcomes by gender and race as well as changes in risk level classifications for those who have completed multiple assessments. Finally, the report will include an overview of different classification methods for correctional risk assessment instruments.

A report is due to the Department of Corrections on December 31, 2021.

Lauren Knoth, (360) 664-9805